The ROTAX 886034 is a certified engine oil radiator (oil cooler) set used on Rotax 912 / 912 i / 914 series engines. It is part of the engine’s lubrication temperature management system, where engine oil is circulated through a compact air-to-oil heat exchanger to maintain safe operating temperatures.

This specific part number (886034) belongs to the “metric / earlier oil radiator generation”, which has been progressively superseded by newer standardized radiator sets (e.g., 886013 / 886001 series depending on revision).

Key features include:

Certified Rotax oil cooler assembly (ATA 79 lubrication system component)
Designed for 912 / 914 / 912 i engine families
Air-to-oil heat exchanger construction
Optimized fin density for improved heat rejection
Supports continuous engine operation temperature control
Integrated with Rotax oil circuit (dry sump system)
Supplied as part of a radiator “set” (with fittings/adapter compatibility depending on installation)
Aircraft certified component (used in factory-approved installations)
Direct replacement part in legacy configurations