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WIX Filters · 57xxx · return line

57309 filter element: specifications & equivalents

The 57309 is a WIX Filters return-line hydraulic filter element, sized 99.8 × 469.3 mm OD × length (ID 46.9 mm). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 99.8 × 469.3 mm
Inside diameter 46.9 mm
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

ParameterValue
Filter type return line
Rating basis nominal
Outside diameter OD 99.8 mm
Inside diameter ID 46.9 mm
Length 469.3 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. 57309
Source catalog WIX Filters (MANN+HUMMEL): WIX Filters online product catalog
Last verified2026-09-27

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 diameter99.8 mm (3.929 in)
Inside diameter46.9 mm (1.846 in)
Overall length469.3 mm (18.476 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 57309 model number is decoded

  • 57309WIX hydraulic cartridge element part number.
  • 99.8 mm OD / 46.9 mm IDCartridge envelope (outside/inside diameter); no mounting thread.
  • Filter media: null.

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 57309 filter element?
The published envelope is 99.8 mm OD × 469.3 mm length with a 46.9 mm inside diameter (3.929 × 18.476 in × 1.846 in ID). Confirm against the housing drawing before ordering.
What replaces the 57309 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 57309 part number?
See the designation decoder above: each segment of 57309 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.