B · official + dimensions8 equivalents · 5 brands

AIR/OIL SEPARATOR cross-reference — Donaldson®, SF®, HIFI OLD NUMBER®, WISMET®

HS-OT1004one HiStar element — compatible replacement for every part below

AIR/OIL SEPARATOR · 8 interchangeable part numbers across 5 brands

Dimensions: OD 160 mm · ID 134 mm · H 165 mm

Typical applications: AIRTEC ROTAIR

Interchangeable cross-brand part numbers

Donaldson®

P 78-3732

SF®

DC 3028, DC 3078, SAO 59400

HIFI OLD NUMBER®

OT 2046

WISMET®

WOA 23050, WOA 23109

HIFI Filter®

OT 1004

Quote source

HiStar Filter® HS-OT1004 Request a quote for this part → Prefilled with your part — reply within 24h · low minimums · European supply.

The Donaldson P 78-3732 air/oil separator cross-references to HiStar HS-OT1004 — a compatible replacement element that also matches SF, HIFI OLD NUMBER, WISMET, and 8 interchangeable OEM part numbers in total. Same form, fit and function, OD 160 mm, ID 134 mm, H 165 mm; fits AIRTEC ROTAIR. Verified against the manufacturer's own cross-reference.