Fleetguard · HF Hydraulic · return line
HF6520 filter element: specifications & equivalents
The HF6520 is a Fleetguard return-line hydraulic filter element, sized 93.22 × 146.3 mm OD × length, rated at 14 µm class (TWA 14 µm at β=2 per ISO 16889). Verify against the current manufacturer data sheet before ordering.
Envelope OD × L 93.22 × 146.3 mm
Filtration rating 14 µm nom.
Beta rating TWA 14 µm at β=2 per ISO 16889
Thread 1-12 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 | 14 µm |
| Rating basis | nominal |
| Beta ratio | TWA 14 µm at β=2 per ISO 16889 |
| Outside diameter OD | 93.22 mm |
| Length | 146.3 mm |
| Thread / connection | 1-12 UNF-2B |
| End caps | spin-on baseplate with attached gasket |
| Flow direction | outside-in |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | HF6520 |
| 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 | 93.22 mm (3.670 in) |
| Overall length | 146.3 mm (5.760 in) |
All 93×146 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ 107249 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 107249 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1108721 page in verification queue | UFI | partial | Fleetguard's online catalog lists 1108721 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 11410 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 11410 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1249 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 1249 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1553 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 1553 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1553001 page in verification queue | UFI | partial | Fleetguard's online catalog lists 1553001 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 155910 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 155910 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 3468857 page in verification queue | UFI | partial | Fleetguard's online catalog lists 3468857 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ 51249 | WIX Filters | partial | Fleetguard's online catalog lists 51249 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 513783 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 513783 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 61000302 page in verification queue | UFI | partial | Fleetguard's online catalog lists 61000302 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 6660728 page in verification queue | UFI | partial | Fleetguard's online catalog lists 6660728 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 70135 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 70135 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ 720 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 720 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 7437000190 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 7437000190 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 7437000192 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 7437000192 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 7437000201 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 7437000201 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 8004500 page in verification queue | UFI | partial | Fleetguard's online catalog lists 8004500 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 80MA010P page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 80MA010P as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 80MA020P page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 80MA020P as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 85249 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 85249 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 85552 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 85552 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 92249 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 92249 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ 925023 | Parker | partial | Fleetguard's online catalog lists 925023 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 925023B page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 925023B as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 925947 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 925947 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ 926556 | Parker | partial | Fleetguard's online catalog lists 926556 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ AE10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists AE10 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ AE25L page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists AE25L as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ AT252815 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists AT252815 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ CA151ACV1 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists CA151ACV1 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ CA201CV1 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists CA201CV1 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ CEST6520 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists CEST6520 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ CP75230 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists CP75230 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ CSG050P25A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists CSG050P25A as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ CSG50925A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists CSG50925A as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ CSG50P10A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists CSG50P10A as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ CSG50P25 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists CSG50P25 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ CW19MP page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists CW19MP as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ DMS04BN page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists DMS04BN as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ E0121B1P10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists E0121B1P10 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ ESF11NCC page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists ESF11NCC as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ F103 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists F103 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ F4E030DCB page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists F4E030DCB as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FA25 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FA25 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FA3525 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FA3525 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FPE3025 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FPE3025 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ FPE3025N page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FPE3025N as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ H370610M192 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists H370610M192 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ HC3525 page in verification queue | Pall | partial | Fleetguard's online catalog lists HC3525 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ HF0652000 page in verification queue | Fleetguard | partial | Fleetguard's online catalog lists HF0652000 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ HF0652000J page in verification queue | Fleetguard | partial | Fleetguard's online catalog lists HF0652000 J as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HGH6121 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists HGH6121 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ K22002 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists K22002 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ LFH4209 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists LFH4209 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ MFE80252 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists MFE80252 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ MX513783 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists MX513783 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P151553 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P151553 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P1652 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P1652 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
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↔ P562330 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P562330 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PER20 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PER20 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PER20MIC10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PER20MIC10 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PER20MIC25 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PER20MIC25 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PF26 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PF26 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ QS1654A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists QS1654A as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ RSE3025 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists RSE3025 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ S29 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists S29 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ SF-6520 | STAUFF | partial | Fleetguard's online catalog lists SF6520 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SP1690 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists SP1690 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ ST6520 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists ST6520 as an interchange for HF6520. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ WD940/2 | MANN-FILTER | partial | MANN-FILTER's online catalog lists HF6520 (FLEETGUARD/CUMMINS FILTRATION) as a comparison number for WD9402. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ WGH6056 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists WGH6056 as an interchange for HF6520. 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 HF6520 model number is decoded
- HF6520Fleetguard HF-series hydraulic spin-on filter part number.
- 146.3 mmOverall height.
- 93.22 mmLargest outside diameter.
- 1-12 UNF-2BSpin-on mounting thread.
- TWA 14 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 HF6520 filter element?
The published envelope is 93.22 mm OD × 146.3 mm length (3.670 × 5.760 in). Confirm against the housing drawing before ordering.
What micron rating does HF6520 use?
This element is rated 14 µm (nominal class) — TWA 14 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 HF6520 filter element?
72 partial match(es) requiring parameter review
How do I read the HF6520 part number?
See the designation decoder above: each segment of HF6520 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 93×146 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.