Cummins 3521032 Turbocharger Turbine Shaft Wheel Assembly

The 3521032 turbine shaft and wheel assembly is a critical rotating component for Cummins Holset HC3, HC5A, HX80, and HX82 frame turbochargers. Manufactured from high-temperature alloy steel, this 11-blade turbine wheel features a 130mm major diameter and 106mm minor diameter profile. The component undergoes precision dynamic balancing to meet OEM vibration and durability standards for heavy-duty diesel applications. Designed for Cummins K50 and KTA50 series engines, this rotor shaft wheel interfaces directly with the compressor wheel via the central shaft and operates within the turbine housing under extreme exhaust gas temperatures. The assembly replaces Cummins OEM part numbers 3521032 and 3526148. Applications span on-highway heavy trucks, off-highway construction machinery, power generation sets, marine propulsion, and mining equipment utilizing K50/KTA50 power units.