Holset 4045172 HX35W Turbocharger Assembly

This Holset HX35W turbocharger assembly (Part Numbers 4045172, 4045173, 4045173H) is engineered for Cummins QSB6.7 and ISB series diesel engines meeting Tier 3 emission standards. The unit features a wastegated turbine housing for precise boost control across industrial and heavy-duty operating cycles. It serves as a direct replacement for Cummins OEM part numbers 4955746 and 5328623, utilizing a floating bearing system and high-temperature alloy turbine wheel for sustained reliability in severe duty applications. The compressor and turbine wheel geometry is optimized for the 6.7L displacement range, delivering high airflow efficiency at low engine speeds. The assembly includes the center housing rotating assembly (CHRA), compressor housing, and wastegate actuator. Cross-reference interchangeability extends to legacy part numbers 2882068H, 3770571, 4044103, and 4044104H. Verification of the specific engine CPL code and turbo nameplate is required prior to installation to ensure correct wastegate calibration and flange orientation.