WIX Filters · 57xxx · return line
57450 filter element: specifications & equivalents
The 57450 is a WIX Filters return-line hydraulic filter element, built with wire media, sized 81.3 × 115.8 mm OD × length, rated at 141 µm class. Verify against the current manufacturer data sheet before ordering.
Envelope OD × L 81.3 × 115.8 mm
Filtration rating 141 µm nom.
Media Wire
Line type return
Catalog verified. Parameters extracted from the manufacturer’s electronic
catalog / official interchange document and checked 2026-09-27. Confidence score 0.90.
Specification table
| Parameter | Value |
|---|---|
| Filter type | return line |
| Media | Wire |
| Filtration rating | 141 µm |
| Rating basis | nominal |
| Outside diameter OD | 81.3 mm |
| Length | 115.8 mm |
| End caps | open-ended cartridge element (no baseplate) |
| Flow direction | outside-in |
| Integral bypass valve | opens at 0.2 bar |
| Seal material | Nitrile (NBR) |
| Manufacturer part no. | 57450 |
| Source catalog | WIX Filters (MANN+HUMMEL): WIX Filters online product catalog |
| Last verified | 2026-09-27 |
Sources: WIX Filters (MANN+HUMMEL) — WIX Filters online product catalog — accessed 2026-09-26.
WIX Filters® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized WIX Filters distributor.
Dimensions & series range
| Outside diameter | 81.3 mm (3.201 in) |
| Overall length | 115.8 mm (4.559 in) |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| ↔ SP-045-F-03-B | STAUFF | partial | STAUFF Filter Interchange lists 574.50 (FBO) as replaced by SP-045-F-03-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
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 57450 model number is decoded
- 57450WIX hydraulic cartridge element part number.
- 81.3 mm OD / null mm IDCartridge envelope (outside/inside diameter); no mounting thread.
- WireFilter media: Wire.
Typical equipment & applications
- Mobile and industrial hydraulic return circuits
- Construction and agricultural equipment
- Heavy-duty transmission and torque-converter circuits
Selection pitfalls — read before you substitute
- A return-line element is not a pressure-line element: return cartridges (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 execution carries an integral bypass valve (opens at 0.2 bar). The same envelope also exists without it, relying on the housing valve. Mixing the two strategies changes cold-start protection — match what was installed originally.
- “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 57450 filter element?
The published envelope is 81.3 mm OD × 115.8 mm length (3.201 × 4.559 in). Confirm against the housing drawing before ordering.
What micron rating does 57450 use?
This element is rated 141 µm (nominal class). Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.
What replaces the 57450 filter element?
1 partial match(es) requiring parameter review
How do I read the 57450 part number?
See the designation decoder above: each segment of 57450 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.
Other models in the 57xxx series
All 221 →Reviewed & verified by the ElementRef engineering desk against WIX Filters (MANN+HUMMEL) on 2026-09-27. Read our editorial & correction policy.