IHI 8980277725 Turbocharger Assembly RHF55V

The IHI RHF55V VIET turbocharger assembly (Part Number 8980277725) is engineered for the Isuzu 4HK1-E2N 5.2L diesel engine platform. It features a variable geometry turbine (VGT) mechanism controlled by an electronic actuator (VIET specification), optimizing boost pressure across the engine operating range for 150 HP output. The unit comprises a cast iron turbine housing, aluminum compressor housing, and a high-speed rotor assembly balanced to OEM standards. It integrates an electronic actuator (12V or 24V configuration depending on specific V-spec variant: VDA40016, VKA40016, VAA40016) for precise vane position control. This assembly serves as a direct replacement for Isuzu NPR, NRR, NQR 75L series trucks (2006 onward) and GMC W3500, W4500 W-Series vehicles equipped with the 4HK1-E2N engine.