Fleetguard · HF Hydraulic · return line
HF6003 filter element: specifications & equivalents
The HF6003 is a Fleetguard return-line hydraulic filter element, sized 93.12 × 146.94 mm OD × length, rated at 25 µm class (TWA 25 µm at β=2 per ISO 16889). Verify against the current manufacturer data sheet before ordering.
Envelope OD × L 93.12 × 146.94 mm
Filtration rating 25 µm nom.
Beta rating TWA 25 µm at β=2 per ISO 16889
Thread 1.00 1/4-12 UNF-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 | 25 µm |
| Rating basis | nominal |
| Beta ratio | TWA 25 µm at β=2 per ISO 16889 |
| Outside diameter OD | 93.12 mm |
| Length | 146.94 mm |
| Thread / connection | 1.00 1/4-12 UNF-2B |
| End caps | spin-on baseplate with attached gasket |
| Flow direction | outside-in |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | HF6003 |
| 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 | 93.12 mm (3.666 in) |
| Overall length | 146.94 mm (5.785 in) |
All 93×147 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ 12321 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 12321 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1610 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 1610 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 170035 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 170035 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 2072 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 2072 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 25010960 page in verification queue | UFI | partial | Fleetguard's online catalog lists 25010960 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 25010962 page in verification queue | UFI | partial | Fleetguard's online catalog lists 25010962 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 35325083 page in verification queue | UFI | partial | Fleetguard's online catalog lists 35325083 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 3595119M92 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 3595119M92 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 36707636 page in verification queue | UFI | partial | Fleetguard's online catalog lists 36707636 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 3I0537 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 3I0537 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 501602701 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 501602701 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 501602704 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 501602704 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ 51610 | WIX Filters | partial | Fleetguard's online catalog lists 51610 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 5610 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 5610 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 5611 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 5611 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 610 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 610 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 6630494 page in verification queue | UFI | partial | Fleetguard's online catalog lists 6630494 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 6639493 page in verification queue | UFI | partial | Fleetguard's online catalog lists 6639493 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 67507 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 67507 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 70102 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 70102 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 7437000132 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 7437000132 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 7437800014 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 7437800014 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 7L190P10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 7L190P10 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 7L95P10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 7L95P10 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 7SL95P10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 7SL95P10 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 85610 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 85610 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 92610 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 92610 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ BC107610 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists BC107610 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ BT526-10 | Baldwin Filters | partial | Fleetguard's online catalog lists BT52610 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ BT526-10 | Baldwin Filters | partial | Baldwin's Form 561 Number-Finder cross-reference lists HF6003 (FLEETGUARD) as replaced by Baldwin BT526-10. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ D126921 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists D126921 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ DE10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists DE10 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ FH58 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FH58 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ H30216 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists H30216 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ H370610M23 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists H370610M23 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ HF0600300 page in verification queue | Fleetguard | partial | Fleetguard's online catalog lists HF0600300 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ HF729 page in verification queue | Fleetguard | partial | Fleetguard's online catalog lists HF729 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ HSM6042 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists HSM6042 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ LFH4935 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists LFH4935 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ MFE81102 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists MFE81102 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ P161267 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P161267 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ P162358 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P162358 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ P163835 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P163835 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P164348 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P164348 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P165285 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P165285 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P3377 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P3377 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P729 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P729 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P7535 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P7535 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P779653 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P779653 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PER216H page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PER216H as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PF924 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PF924 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SH56053 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists SH56053 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ V63304 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists V63304 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ WD10014 | MANN-FILTER | partial | MANN-FILTER's online catalog lists HF6003 (FLEETGUARD/CUMMINS FILTRATION) as a comparison number for WD10014. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ WD10014 | MANN-FILTER | partial | Fleetguard's online catalog lists WD10014 as an interchange for HF6003. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ WGH6003 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists WGH6003 as an interchange for HF6003. 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 HF6003 model number is decoded
- HF6003Fleetguard HF-series hydraulic spin-on filter part number.
- 146.94 mmOverall height.
- 93.12 mmLargest outside diameter.
- 1.00 1/4-12 UNF-2BSpin-on mounting thread.
- TWA 25 µm at β=2 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 HF6003 filter element?
The published envelope is 93.12 mm OD × 146.94 mm length (3.666 × 5.785 in). Confirm against the housing drawing before ordering.
What micron rating does HF6003 use?
This element is rated 25 µm (nominal class) — TWA 25 µm at β=2 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 HF6003 filter element?
56 partial match(es) requiring parameter review
How do I read the HF6003 part number?
See the designation decoder above: each segment of HF6003 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 24 catalog element(s) share the 93×147 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.