Fleetguard · HF Hydraulic · return line
HF35543 filter element: specifications & equivalents
The HF35543 is a Fleetguard return-line hydraulic filter element, sized 99.06 × 469.9 mm OD × length (ID 58.42 mm), rated at 6.8 µm absolute (6.8 µm at β75(c); 8 µm at β200(c) per ISO 16889). Verify against the current manufacturer data sheet before ordering.
Envelope OD × L 99.06 × 469.9 mm
Inside diameter 58.42 mm
Filtration rating 6.8 µm abs.
Beta rating 6.8 µm at β75(c); 8 µm at β200(c) per ISO 16889
Collapse / burst 10.342 bar
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 | 6.8 µm |
| Rating basis | absolute |
| Beta ratio | 6.8 µm at β75(c); 8 µm at β200(c) per ISO 16889 |
| Outside diameter OD | 99.06 mm |
| Inside diameter ID | 58.42 mm |
| Length | 469.9 mm |
| End caps | spin-on baseplate with attached gasket |
| Flow direction | outside-in |
| Collapse / burst pressure | 10.342 bar |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | HF35543 |
| 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 | 99.06 mm (3.900 in) |
| Inside diameter | 58.42 mm (2.300 in) |
| Overall length | 469.9 mm (18.500 in) |
All 99×470 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ 1108707 page in verification queue | UFI | partial | Fleetguard's online catalog lists 1108707 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1233304 page in verification queue | UFI | partial | Fleetguard's online catalog lists 1233304 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 18LS7 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 18LS7 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ 18LZ10 | Schroeder Industries | partial | Fleetguard's online catalog lists 18LZ10 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 2106034 page in verification queue | UFI | partial | Fleetguard's online catalog lists 2106034 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 737397 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 737397 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 7628580 page in verification queue | UFI | partial | Fleetguard's online catalog lists 7628580 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 9437100485 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 9437100485 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 9437100825 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 9437100825 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 95132 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 95132 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HYF20030 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists HYF20030 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ MF0066033 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists MF0066033 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P560401 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P560401 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PSC18L1810GV page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PSC18L1810GV as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PSC18L183GV page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PSC18L183GV as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PT23616MPG page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PT23616MPG as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ PT8446-MPG | Baldwin Filters | partial | Fleetguard's online catalog lists PT8446MPG as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ PT8446-MPG | Baldwin Filters | partial | Baldwin's Form 561 Number-Finder cross-reference lists HF35543 (FL) as replaced by Baldwin PT8446-MPG. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SH70044 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists SH70044 as an interchange for HF35543. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ W01AG322 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists W01AG322 as an interchange for HF35543. 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 HF35543 model number is decoded
- HF35543Fleetguard HF-series hydraulic spin-on filter part number.
- 469.9 mmOverall height.
- 99.06 mmLargest outside diameter.
- 58.42 mmLargest end inside diameter.
- 6.8 µm at β75(c); 8 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 HF35543 filter element?
The published envelope is 99.06 mm OD × 469.9 mm length with a 58.42 mm inside diameter (3.900 × 18.500 in × 2.300 in ID). Confirm against the housing drawing before ordering.
What micron rating does HF35543 use?
This element is rated 6.8 µm absolute — 6.8 µm at β75(c); 8 µm at β200(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 HF35543 filter element?
20 partial match(es) requiring parameter review
How do I read the HF35543 part number?
See the designation decoder above: each segment of HF35543 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 59 catalog element(s) share the 99×470 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.
12.01.18 D 10 XSX /-2.625 4.14.08 D 10 BN4 4.23.18 R 040 BN4 5.03.18 D 01 BN4 5.03.18 D 01 BN4 /-V 5.03.18 D 03 BH4 5.03.18 D 03 BH4 /-EPR 5.03.18 D 03 BH4 /-V 5.03.18 D 03 BH4 /-V-SFREE 5.03.18 D 03 BN4
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.