Fleetguard · HF Hydraulic · inline line
HF6903 filter element: specifications & equivalents
The HF6903 is a Fleetguard inline-line hydraulic filter element, sized 73 × 385 mm OD × length (ID 34.2 mm), rated at 10 µm absolute (10 µm at β75(c); 11 µm at β200(c) per ISO 16889). Verify against the current manufacturer data sheet before ordering.
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 | 10 µm |
| Rating basis | absolute |
| Beta ratio | 10 µm at β75(c); 11 µm at β200(c) per ISO 16889 |
| Outside diameter OD | 73 mm |
| Inside diameter ID | 34.2 mm |
| Length | 385 mm |
| End caps | open-ended cartridge element |
| Rated flow | 480 L/min |
| Collapse / burst pressure | 30 bar |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | HF6903 |
| 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 | 73 mm (2.874 in) |
| Inside diameter | 34.2 mm (1.346 in) |
| Overall length | 385 mm (15.157 in) |
All 73×385 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ 480R010BN3HC page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 480R010BN3HC as an interchange for HF6903. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HF0690300 page in verification queue | Fleetguard | partial | Fleetguard's online catalog lists HF0690300 as an interchange for HF6903. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ WGHH48010RB page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists WGHH48010RB as an interchange for HF6903. 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 HF6903 model number is decoded
- HF6903Fleetguard HF-series hydraulic cartridge element part number.
- 385 mmOverall height.
- 73 mmLargest outside diameter.
- 34.2 mmLargest end inside diameter.
- 10 µm at β75(c); 11 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
- “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 HF6903 filter element?
What micron rating does HF6903 use?
What replaces the HF6903 filter element?
How do I read the HF6903 part number?
Is a same-envelope aftermarket element always a drop-in replacement?
How often should a hydraulic return-line element be replaced?
Same-envelope elements from other brands
View full interchange →These 1 catalog element(s) share the 73×385 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.