Fleetguard · HF Hydraulic · return line

HF6777 filter element: specifications & equivalents

Q: What are the dimensions of the HF6777 filter element?

The published envelope is 128.93 mm OD × 170.41 mm length (5.076 × 6.709 in). Confirm against the housing drawing before ordering.

Q: What micron rating does HF6777 use?

This element is rated 6.3 µm absolute — 6.3 µm at β75(c); 7.2 µm at β200(c) per ISO 16889. Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

The HF6777 is a Fleetguard return-line hydraulic filter element, sized 128.93 × 170.41 mm OD × length, rated at 6.3 µm absolute (6.3 µm at β75(c); 7.2 µm at β200(c) per ISO 16889). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 128.93 × 170.41 mm

Filtration rating 6.3 µm abs.

Beta rating 6.3 µm at β75(c); 7.2 µm at β200(c) per ISO 16889

Thread 1.00 1/2-16 UN-2B

Line type return

Catalog verified. Parameters extracted from the manufacturer’s electronic catalog / official interchange document and checked 2026-09-28. Confidence score 0.90.

Specifications and cross-references are taken from the Fleetguard online catalog API. Where both TWA and Beta ratings are published the conventions differ — verify cleanliness targets, collapse rating and seal configuration against the current Fleetguard data sheet before ordering.

Specification table

Parameter	Value
Filter type	return line
Filtration rating	6.3 µm
Rating basis	absolute
Beta ratio	6.3 µm at β75(c); 7.2 µm at β200(c) per ISO 16889
Outside diameter OD	128.93 mm
Length	170.41 mm
Thread / connection	1.00 1/2-16 UN-2B
End caps	spin-on baseplate with attached gasket
Flow direction	outside-in
Integral bypass valve	none (housing/valve-dependent)
Manufacturer part no.	HF6777
Source catalog	Cummins Filtration / Fleetguard: Fleetguard online product catalog (fleetguard.com)
Last verified	2026-09-28

Sources: Cummins Filtration / Fleetguard — Fleetguard online product catalog (fleetguard.com) — accessed 2026-09-28.

Fleetguard® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized Fleetguard distributor.

Dimensions & series range

Outside diameter	128.93 mm (5.076 in)
Overall length	170.41 mm (6.709 in)

All 129×170 mm interchange elements →

Cross references & equivalents

Equivalent model	Brand	Match level	Note
↔ 100131 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 100131 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 10353985 page in verification queue	UFI	partial	Fleetguard's online catalog lists 10353985 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 1046Z602 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 1046Z602 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 1075951M1 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 1075951M1 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 10SL140P10 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 10SL140P10 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 11251 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 11251 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 1450230 page in verification queue	UFI	partial	Fleetguard's online catalog lists 1450230 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 148840A page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 148840A as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 149840 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 149840 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 151975 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 151975 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 15220403 page in verification queue	UFI	partial	Fleetguard's online catalog lists 15220403 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 15801 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 15801 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 159383A page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 159383A as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 160MA005BN page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 160MA005BN as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 160MA010P page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 160MA010P as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 167500H6LL113RP page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 167500H6LL113RP as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 167500RH6SLS000P page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 167500RH6SLS000P as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 17032342 page in verification queue	UFI	partial	Fleetguard's online catalog lists 17032342 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 17032375 page in verification queue	UFI	partial	Fleetguard's online catalog lists 17032375 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 1746 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 1746 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 1759MP page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 1759MP as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 1H1234 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 1H1234 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 2020600 page in verification queue	UFI	partial	Fleetguard's online catalog lists 2020600 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 2059435 page in verification queue	UFI	partial	Fleetguard's online catalog lists 2059435 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 210004 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 210004 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 2115939 page in verification queue	UFI	partial	Fleetguard's online catalog lists 2115939 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 2116110 page in verification queue	UFI	partial	Fleetguard's online catalog lists 2116110 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 223478 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 223478 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 2237809 page in verification queue	UFI	partial	Fleetguard's online catalog lists 2237809 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 25011183 page in verification queue	UFI	partial	Fleetguard's online catalog lists 25011183 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 25011184 page in verification queue	UFI	partial	Fleetguard's online catalog lists 25011184 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 262546 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 262546 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 27080011 page in verification queue	UFI	partial	Fleetguard's online catalog lists 27080011 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 29215528 page in verification queue	UFI	partial	Fleetguard's online catalog lists 29215528 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 29819153 page in verification queue	UFI	partial	Fleetguard's online catalog lists 29819153 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 3401303 page in verification queue	UFI	partial	Fleetguard's online catalog lists 3401303 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 342449 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 342449 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 361470 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 361470 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 3800004 page in verification queue	UFI	partial	Fleetguard's online catalog lists 3800004 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 3800004Y8 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 3800004Y8 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 3800066Y8 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 3800066Y8 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 3800077 page in verification queue	UFI	partial	Fleetguard's online catalog lists 3800077 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 3800077F7 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 3800077F7 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 3800079 page in verification queue	UFI	partial	Fleetguard's online catalog lists 3800079 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 3800083Y8 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 3800083Y8 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 397 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 397 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 3I1914 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 3I1914 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 40103 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 40103 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 4279891 page in verification queue	UFI	partial	Fleetguard's online catalog lists 4279891 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 4453K81 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 4453K81 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 45Z602 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 45Z602 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 4700223478 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 4700223478 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 499349 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 499349 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 4T6788 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 4T6788 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 5002408 page in verification queue	UFI	partial	Fleetguard's online catalog lists 5002408 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 502520 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 502520 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 513153 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 513153 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 51746	WIX Filters	partial	Fleetguard's online catalog lists 51746 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 51759	WIX Filters	partial	Fleetguard's online catalog lists 51759 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 51759MP page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 51759MP as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 525 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 525 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 555771 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 555771 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 57E142 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 57E142 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 605602 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 605602 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 63040101U page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 63040101U as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 63459 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 63459 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 70163 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 70163 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 708476 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 708476 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 709666 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 709666 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 7099211 page in verification queue	UFI	partial	Fleetguard's online catalog lists 7099211 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 7106175 page in verification queue	UFI	partial	Fleetguard's online catalog lists 7106175 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 73052092 page in verification queue	UFI	partial	Fleetguard's online catalog lists 73052092 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 743570 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 743570 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 75C4251 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 75C4251 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 7621453 page in verification queue	UFI	partial	Fleetguard's online catalog lists 7621453 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 7621454 page in verification queue	UFI	partial	Fleetguard's online catalog lists 7621454 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 7631726 page in verification queue	UFI	partial	Fleetguard's online catalog lists 7631726 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 7738743 page in verification queue	UFI	partial	Fleetguard's online catalog lists 7738743 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 787816 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 787816 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 8076001 page in verification queue	UFI	partial	Fleetguard's online catalog lists 8076001 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 8320240 page in verification queue	UFI	partial	Fleetguard's online catalog lists 8320240 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 85746 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 85746 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 85759 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 85759 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 8750996 page in verification queue	UFI	partial	Fleetguard's online catalog lists 8750996 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 89616 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 89616 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 8J1600 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 8J1600 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 902188 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 902188 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 921169 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 921169 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 923169B page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 923169B as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 926163 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 926163 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 926163B page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 926163B as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 926169	Parker	partial	Fleetguard's online catalog lists 926169 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 926169B page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 926169B as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 92632 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 92632 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 927147 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 927147 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 92746 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 92746 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 92759 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 92759 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 928766	Parker	partial	Fleetguard's online catalog lists 928766 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 929096 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 929096 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 929096B page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 929096B as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 932200 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 932200 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 932237 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 932237 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 9327082 page in verification queue	UFI	partial	Fleetguard's online catalog lists 9327082 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 941056 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 941056 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 9797K12 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 9797K12 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 9T5664 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 9T5664 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ A0805526ZB page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists A0805526ZB as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ A150G06 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists A150G06 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ AG709666 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists AG709666 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ AR44696 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists AR44696 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ ARH0475LB05 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists ARH0475LB05 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ AT44696 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists AT44696 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ AT58368 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists AT58368 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ BJ28710 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists BJ28710 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ BSO128S10N38 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists BSO128S10N38 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ BT287-10	Baldwin Filters	partial	Fleetguard's online catalog lists BT28710 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ BT8307-MPG	Baldwin Filters	partial	Fleetguard's online catalog lists BT8307MPG as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ BT9371-MPG	Baldwin Filters	partial	Fleetguard's online catalog lists BT9371MPG as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ BT9371-MPG	Baldwin Filters	partial	Baldwin's Form 561 Number-Finder cross-reference lists HF6777 (FLEETGUARD) as replaced by Baldwin BT9371-MPG. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting.
↔ CA301ACD1 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CA301ACD1 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CA301ACV1 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CA301ACV1 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CA301AFC1 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CA301AFC1 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CA401CD1 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CA401CD1 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CA401FC1 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CA401FC1 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CF50E10 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CF50E10 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CP128206SYN50 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CP128206SYN50 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CP12821050 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CP12821050 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CP12821056 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CP12821056 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CP128255 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CP128255 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CS1417H page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CS1417H as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CSG100A06 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CSG100A06 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CSG100A06A page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CSG100A06A as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CSG100P10 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CSG100P10 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CSG100P10A page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CSG100P10A as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ D5NNF914A page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists D5NNF914A as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ D80538 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists D80538 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ DE0211B1R05 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists DE0211B1R05 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ DMS11NN page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists DMS11NN as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ DMS511AN page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists DMS511AN as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ E0211B1R05 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists E0211B1R05 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ ESF21NFB page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists ESF21NFB as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ F4E050CCB page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists F4E050CCB as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ F4E050HCB page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists F4E050HCB as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ F4E051HCB page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists F4E051HCB as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ F4F05HCB page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists F4F05HCB as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ F4H051CCB page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists F4H051CCB as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ F506810 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists F506810 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ FA5725 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists FA5725 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ FB10 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists FB10 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ FH61 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists FH61 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ FPE5005G page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists FPE5005G as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ FPE5010 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists FPE5010 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ FPE5010N page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists FPE5010N as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ FS251 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists FS251 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ GG17032373 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists GG17032373 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ GG17032375 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists GG17032375 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ H1976934 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists H1976934 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ H4104001 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists H4104001 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ H500710M261 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists H500710M261 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ H510710M26 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists H510710M26 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HC5511 page in verification queue	Pall	partial	Fleetguard's online catalog lists HC5511‎ as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HC5710 page in verification queue	Pall	partial	Fleetguard's online catalog lists HC5710 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HC7500SDN4H page in verification queue	Pall	partial	Fleetguard's online catalog lists HC7500SDN4H as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HC7500SKN4H page in verification queue	Pall	partial	Fleetguard's online catalog lists HC7500SKN4H as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HC7500SUN4H page in verification queue	Pall	partial	Fleetguard's online catalog lists HC7500SUN4H as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HC9500SUH4H page in verification queue	Pall	partial	Fleetguard's online catalog lists HC9500SUH4H as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HC9500SUJ4H page in verification queue	Pall	partial	Fleetguard's online catalog lists HC9500SUJ4H as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HCH3567 page in verification queue	Pall	partial	Fleetguard's online catalog lists HCH3567 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HF0677700 page in verification queue	Fleetguard	partial	Fleetguard's online catalog lists HF0677700 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HF167162 page in verification queue	Fleetguard	partial	Fleetguard's online catalog lists HF167162 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HF169430 page in verification queue	Fleetguard	partial	Fleetguard's online catalog lists HF169430 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HF738 page in verification queue	Fleetguard	partial	Fleetguard's online catalog lists HF738 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HP75L46MB page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists HP75L46MB as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ K23041A page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists K23041A as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ K23042 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists K23042 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ L194 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists L194 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ L194U page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists L194U as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ LFH4955 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists LFH4955 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ LFP449 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists LFP449 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ MF0058061 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists MF0058061 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ MF0058062 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists MF0058062 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ MF1602 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists MF1602 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ MFE16005BN2 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists MFE16005BN2 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ MFE160102 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists MFE160102 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ MG636843 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists MG636843 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ MP3101 page in verification queue	MP Filtri	partial	Fleetguard's online catalog lists MP3101 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ MS3G1087 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists MS3G1087 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ OFRS60X10M page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists OFRS60X10M as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P163068 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P163068 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P165189 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P165189 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P167162	Donaldson	partial	Fleetguard's online catalog lists P167162 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P550388	Donaldson	partial	Fleetguard's online catalog lists P550388 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P560514 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P560514 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P562209 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P562209 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P571536 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P571536 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P571539 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P571539 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P7252 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P7252 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P738 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P738 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P779596 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P779596 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P779660 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P779660 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PF941 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists PF941 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PH3567 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists PH3567 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PH35671 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists PH35671 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PH3567V151 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists PH3567V151 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PH3567V15C1 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists PH3567V15C1 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PH3567V51 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists PH3567V51 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PH3567V5C1 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists PH3567V5C1 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PLU16791000 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists PLU16791000 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PR3959 page in verification queue	Parker	partial	Fleetguard's online catalog lists PR3959 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PR4437 page in verification queue	Parker	partial	Fleetguard's online catalog lists PR4437 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ R25844 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists R25844 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ R2910B page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists R2910B as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ R2910B928766 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists R2910B(928766) as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ R2910C page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists R2910C as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ R2910C926169 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists R2910C(926169) as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ R750H0406A page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists R750H0406A as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ RE50 page in verification queue	STAUFF	partial	Fleetguard's online catalog lists RE50 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ RE501 page in verification queue	STAUFF	partial	Fleetguard's online catalog lists RE501 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ RM18002006 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists RM18002006 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ RM20925764 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists RM20925764 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ RSE5010 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists RSE5010 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ RSE5010F page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists RSE5010F as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ RSE5010N page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists RSE5010N as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ S58 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists S58 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SBF-7500-410B	Schroeder Industries	partial	Fleetguard's online catalog lists SBF7500410B as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SBF-7500-4Z5B	Schroeder Industries	partial	Fleetguard's online catalog lists SBF75004Z5B as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SE10P page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists SE10P as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SE25 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists SE25 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SE25P page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists SE25P as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SF570MG page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists SF570MG as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SF-6706-MG	STAUFF	partial	Fleetguard's online catalog lists SF6706MG as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SF-6720	STAUFF	partial	Fleetguard's online catalog lists SF6720 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SF750046UM page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists SF750046UM as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SFD18498 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists SFD18498 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SH56760 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists SH56760 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SPE5025 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists SPE5025 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ ST2860 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists ST2860 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ ST6706 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists ST6706 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ ST6710 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists ST6710 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ U3L3FE page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists U3L3FE as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ UPC6710W8A page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists UPC6710W8A as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ V0211B1C05 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists V0211B1C05 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ V0211B1V05 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists V0211B1V05 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ V15801 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists V15801 as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ W1237X page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists W1237X as an interchange for HF6777. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ WD13011X	MANN-FILTER	partial	MANN-FILTER's online catalog lists HF6777 (FLEETGUARD/CUMMINS FILTRATION) as a comparison number for WD13011X. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.

Interchange levels: full catalog-confirmed drop-in · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the HF6777 model number is decoded

HF6777Fleetguard HF-series hydraulic spin-on filter part number.
170.41 mmOverall height.
128.93 mmLargest outside diameter.
1.00 1/2-16 UN-2BSpin-on mounting thread.
6.3 µm at β75(c); 7.2 µm at β200(c) per ISO 16889Published efficiency ratings.

Typical equipment & applications

Construction, agricultural and industrial hydraulic circuits
Mobile-equipment hydraulic return and pressure lines

Selection pitfalls — read before you substitute

A return-line element is not a pressure-line element: return cartridges (BN4HC low-collapse) tolerate roughly 20 bar differential, while BH4HC pressure executions are rated to 210 bar. Installing a low-collapse element in a pressure housing can rupture the media on cold-start spikes.
This element has no integral bypass — opening pressure is set by the housing’s reusable bypass valve. Confirm the valve setting (commonly 3.4 bar) is present before fitting.
“10 µm nominal” and “12 µm at β1000” can describe the very same media — one is reported at β≥200, the other at β≥1000 per ISO 16889. Compare ratings at the same Beta test point, not just the printed micron number.
Nitrile (NBR) seals are standard for mineral hydraulic oil but fail early in some phosphate-ester fluids and at sustained high temperature; verify seal compound against the fluid data sheet (fluorocarbon/Viton executions may be required).
End-cap geometry and the number/position of O-rings block interchange even when OD and length match — visually compare end caps before fitting, especially with aftermarket cartridges.

Frequently asked questions

What are the dimensions of the HF6777 filter element?

The published envelope is 128.93 mm OD × 170.41 mm length (5.076 × 6.709 in). Confirm against the housing drawing before ordering.

What micron rating does HF6777 use?

This element is rated 6.3 µm absolute — 6.3 µm at β75(c); 7.2 µm at β200(c) per ISO 16889. Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

What replaces the HF6777 filter element?

246 partial match(es) requiring parameter review

How do I read the HF6777 part number?

See the designation decoder above: each segment of HF6777 encodes size, line type, filtration grade and media/collapse execution.

Is a same-envelope aftermarket element always a drop-in replacement?

No. Matching OD and length only proves the cartridge fits the bowl. End-cap style, seal compound, micron/Beta rating, collapse pressure and bypass configuration must also match; the table above tags every equivalent as full, partial or verify for exactly this reason.

How often should a hydraulic return-line element be replaced?

Replace at the housing manufacturer’s recommended differential-pressure setting (commonly signalled by a clogging indicator), or on a time-based service interval when no indicator is fitted — never wait for bypass to open continuously, because unfiltered oil then reaches the valves.

Same-envelope elements from other brands

View full interchange →

These 26 catalog element(s) share the 129×170 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

HF6130 Fleetguard · 26 µm HF6131 Fleetguard · 26 µm HF6132 Fleetguard · 26 µm HF6133 Fleetguard · 7 µm HF6163 Fleetguard · 16 µm HF6167 Fleetguard · 33 µm HF6358 Fleetguard · 16 µm HF6700 Fleetguard · 1 µm HF6703 Fleetguard · 3 µm HF6706 Fleetguard · 6 µm

Other models in the HF Hydraulic series

All 2621 →

HF28084 HF28086 HF28088 HF28201 HF28202 97×247 mm HF28652 HF28658 95×193 mm HF28660 HF28662 HF28667

Reviewed & verified by the ElementRef engineering desk against Cummins Filtration / Fleetguard on 2026-09-28. Read our editorial & correction policy.