Fleetguard · HF Hydraulic · inline line
HF6181 filter element: specifications & equivalents
The HF6181 is a Fleetguard inline-line hydraulic filter element, sized 126 × 210 mm OD × length (ID 92 mm), rated at 57 µm absolute (57 µm at β75(c) per ISO 16889). Verify against the current manufacturer data sheet before ordering.
Envelope OD × L 126 × 210 mm
Inside diameter 92 mm
Filtration rating 57 µm abs.
Beta rating 57 µm at β75(c) per ISO 16889
Collapse / burst 8 bar
Line type inline
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 | inline line |
| Filtration rating | 57 µm |
| Rating basis | absolute |
| Beta ratio | 57 µm at β75(c) per ISO 16889 |
| Outside diameter OD | 126 mm |
| Inside diameter ID | 92 mm |
| Length | 210 mm |
| End caps | open-ended cartridge element |
| Rated flow | 270 L/min |
| Collapse / burst pressure | 8 bar |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | HF6181 |
| 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 | 126 mm (4.961 in) |
| Inside diameter | 92 mm (3.622 in) |
| Overall length | 210 mm (8.268 in) |
All 126×210 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ 12200P10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 12200P10 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1264293H1 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 1264293H1 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1499571 page in verification queue | UFI | partial | Fleetguard's online catalog lists 1499571 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 150566 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 150566 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1535149 page in verification queue | UFI | partial | Fleetguard's online catalog lists 1535149 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1695782 page in verification queue | UFI | partial | Fleetguard's online catalog lists 1695782 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1930781 page in verification queue | UFI | partial | Fleetguard's online catalog lists 1930781 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 2556800 page in verification queue | UFI | partial | Fleetguard's online catalog lists 2556800 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 2700210 page in verification queue | UFI | partial | Fleetguard's online catalog lists 2700210 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 31987833491 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 31987833491 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 3378876H91 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 3378876H91 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 415567 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 415567 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 4915555 page in verification queue | UFI | partial | Fleetguard's online catalog lists 4915555 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 515567 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 515567 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 7062 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 7062 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 71316231 page in verification queue | UFI | partial | Fleetguard's online catalog lists 71316231 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 943938Q page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 943938Q as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ AC3202 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists AC3202 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ CRS3001 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists CRS3001 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ DH61 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists DH61 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ ERF31NCC1 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists ERF31NCC1 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FA293H page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FA293H as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FFPA11038 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FFPA11038 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FFPA1103810 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FFPA1103810 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FFPA11095 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FFPA11095 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FFPA1109510 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FFPA1109510 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ FT6301P10A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FT6301P10A as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ GHF7101 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists GHF7101 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ H1055 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists H1055 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ H1375 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists H1375 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ H4021 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists H4021 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HEM6040 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists HEM6040 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HF0618100 page in verification queue | Fleetguard | partial | Fleetguard's online catalog lists HF0618100 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HF0618100JX page in verification queue | Fleetguard | partial | Fleetguard's online catalog lists HF0618100JX as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HR2504UN page in verification queue | Donaldson | partial | Fleetguard's online catalog lists HR2504UN as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HY2812 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists HY2812 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ J0150566 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists J0150566 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ MF0063567 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists MF0063567 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ MR6301P10A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists MR6301P10A as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P172460 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P172460 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P173052 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P173052 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PM5126 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PM5126 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PR4407 page in verification queue | Parker | partial | Fleetguard's online catalog lists PR4407 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ PT682 | Baldwin Filters | partial | Fleetguard's online catalog lists PT682 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ R730C10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists R730C10 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ RC310CD1 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists RC310CD1 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ RFC730810PV page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists RFC730810PV as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ RFC730810PVW page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists RFC730810PVW as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ RFC730825PV page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists RFC730825PV as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ S5568PO page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists S5568PO as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SFTXW3812UM page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists SFTXW3812UM as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SH56231 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists SH56231 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ TXX6A10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists TXX6A10 as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ TXX6A10B page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists TXX6A10B as an interchange for HF6181. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ WGTX6A10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists WGTX6A10 as an interchange for HF6181. 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 HF6181 model number is decoded
- HF6181Fleetguard HF-series hydraulic cartridge element part number.
- 210 mmOverall height.
- 126 mmLargest outside diameter.
- 92 mmLargest end inside diameter.
- 57 µm at β75(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
- “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 HF6181 filter element?
The published envelope is 126 mm OD × 210 mm length with a 92 mm inside diameter (4.961 × 8.268 in × 3.622 in ID). Confirm against the housing drawing before ordering.
What micron rating does HF6181 use?
This element is rated 57 µm absolute — 57 µm at β75(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 HF6181 filter element?
55 partial match(es) requiring parameter review
How do I read the HF6181 part number?
See the designation decoder above: each segment of HF6181 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 6 catalog element(s) share the 126×210 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.
Other models in the HF Hydraulic series
All 2621 →Reviewed & verified by the ElementRef engineering desk against Cummins Filtration / Fleetguard on 2026-09-28. Read our editorial & correction policy.