Holset 3803989 Turbocharger Assembly

The Holset H2E model turbocharger bearing part number 3803989 is an OEM replacement unit manufactured for Cummins heavy-duty diesel engines. This turbocharger utilizes a fixed geometry turbine housing and compressor assembly calibrated for specific engine torque curves. It features a rotating assembly with journal bearings and thrust bearing system lubricated by engine oil supply. The unit includes the turbine housing, compressor housing, and center rotating assembly. Verification of the original nameplate part number is required prior to installation to ensure correct compressor and turbine trim matching.