B · official + dimensions6 equivalents · 5 brands

AIR/OIL SEPARATOR cross-reference — Baldwin®, Donaldson®, Fleetguard®, WISMET®

HS-OT2126one HiStar element — compatible replacement for every part below

AIR/OIL SEPARATOR · 6 interchangeable part numbers across 5 brands

Dimensions: OD 140 mm · ID 121 mm · H 287 mm

Interchangeable cross-brand part numbers

Baldwin®

OAS 4237

Donaldson®

P 52-5670, P 52-5673

Fleetguard®

AS 2220

WISMET®

WOA 23122

HIFI Filter®

OT 2126

Quote source

HiStar Filter® HS-OT2126 Request a quote for this part → Prefilled with your part — reply within 24h · low minimums · European supply.

The Baldwin OAS 4237 air/oil separator cross-references to HiStar HS-OT2126 — a compatible replacement element that also matches Donaldson, Fleetguard, WISMET, and 6 interchangeable OEM part numbers in total. Same form, fit and function, OD 140 mm, ID 121 mm, H 287 mm. Verified against the manufacturer's own cross-reference.