WIX Filters · 57xxx · return line

57100 filter element: specifications & equivalents

The 57100 is a WIX Filters return-line hydraulic filter element, built with cellulose media, sized 42.5 × 87.5 mm OD × length (ID 23 mm), rated at 25 µm class (not separately rated (nominal cellulose)). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 42.5 × 87.5 mm

Inside diameter 23 mm

Filtration rating 25 µm nom.

Beta rating not separately rated (nominal cellulose)

Media Cellulose

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	Cellulose
Filtration rating	25 µm
Rating basis	nominal
Beta ratio	not separately rated (nominal cellulose)
Outside diameter OD	42.5 mm
Inside diameter ID	23 mm
Length	87.5 mm
End caps	open-ended cartridge element (no baseplate)
Flow direction	outside-in
Integral bypass valve	none (housing/valve-dependent)
Seal material	Nitrile (NBR)
Manufacturer part no.	57100
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	42.5 mm (1.673 in)
Inside diameter	23 mm (0.906 in)
Overall length	87.5 mm (3.445 in)

Cross references & equivalents

No catalog-verified cross references yet. This model is in the manual verification queue — request a verified equivalent.

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 57100 model number is decoded

57100WIX hydraulic cartridge element part number.
42.5 mm OD / 23 mm IDCartridge envelope (outside/inside diameter); no mounting thread.
CelluloseFilter media: Cellulose.

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 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 57100 filter element?

The published envelope is 42.5 mm OD × 87.5 mm length with a 23 mm inside diameter (1.673 × 3.445 in × 0.906 in ID). Confirm against the housing drawing before ordering.

What micron rating does 57100 use?

This element is rated 25 µm (nominal class) — not separately rated (nominal cellulose). Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

What replaces the 57100 filter element?

Cross references are being verified for this model — use the inquiry form and the engineering desk will confirm equivalents.

How do I read the 57100 part number?

See the designation decoder above: each segment of 57100 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 →

57000 78×80 mm · 21 µm 57002 68×69 mm · 15 µm 57005 60×229 mm 57023 76×87 mm · 32 µm 57024 52×150 mm · 9 µm 57030 64×99 mm · 35 µm 57031 88×140 mm 57039 94×142 mm · 25 µm 57043 97×234 mm · 3 µm 57044 119×227 mm · 17 µm

Reviewed & verified by the ElementRef engineering desk against WIX Filters (MANN+HUMMEL) on 2026-09-27. Read our editorial & correction policy.