Fleetguard · HF Hydraulic · return line
HF7949 filter element: specifications & equivalents
The HF7949 is a Fleetguard return-line hydraulic filter element, built with cellulose media, sized 135.74 × 243.69 mm OD × length, rated at 11 µm class (TWA 11 µm at β=2; 33 µm at β75(c); 39 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 | return line |
| Media | Cellulose |
| Filtration rating | 11 µm |
| Rating basis | nominal |
| Beta ratio | TWA 11 µm at β=2; 33 µm at β75(c); 39 µm at β200(c) per ISO 16889 |
| Outside diameter OD | 135.74 mm |
| Length | 243.69 mm |
| Thread / connection | M42 X 2-6H INT |
| End caps | spin-on baseplate with attached gasket |
| Flow direction | outside-in |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | HF7949 |
| 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 | 135.74 mm (5.344 in) |
| Overall length | 243.69 mm (9.594 in) |
All 136×244 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ EO1034 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists EO1034 as an interchange for HF7949. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HF0794900 page in verification queue | Fleetguard | partial | Fleetguard's online catalog lists HF0794900 as an interchange for HF7949. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P551246 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P551246 as an interchange for HF7949. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ WD14007 | MANN-FILTER | partial | MANN-FILTER's online catalog lists HF7949 (FLEETGUARD/CUMMINS FILTRATION) as a comparison number for WD14007. 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 HF7949 model number is decoded
- HF7949Fleetguard HF-series hydraulic spin-on filter part number.
- 243.69 mmOverall height.
- 135.74 mmLargest outside diameter.
- M42 X 2-6H INTSpin-on mounting thread.
- TWA 11 µm at β=2; 33 µm at β75(c); 39 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 HF7949 filter element?
What micron rating does HF7949 use?
What replaces the HF7949 filter element?
How do I read the HF7949 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 136×244 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.