B · official + dimensions3 equivalents · 3 brands

AIR/OIL SEPARATOR cross-reference — SF®, WISMET®

HS-OA1165one HiStar element — compatible replacement for every part below

AIR/OIL SEPARATOR · 3 interchangeable part numbers across 3 brands

Dimensions: OD 91 mm · ID 43.5 mm · H 156 mm

Interchangeable cross-brand part numbers

SF®

SAO 55900

WISMET®

WDA 21175

HIFI Filter®

OA 1165

Quote source

HiStar Filter® HS-OA1165 Request a quote for this part → Prefilled with your part — reply within 24h · low minimums · European supply.

The SF SAO 55900 air/oil separator cross-references to HiStar HS-OA1165 — a compatible replacement element that also matches WISMET, and 3 interchangeable OEM part numbers in total. Same form, fit and function, OD 91 mm, ID 43.5 mm, H 156 mm. Verified against the manufacturer's own cross-reference.