Remanufactured 4047231 Cummins ISC 8.3L / ISL 8.9L Holset HE431VE (HE400VG Family) Turbocharger with HOLSET OEM VGT Actuator

The 4047231 Turbocharger is a purpose-matched Holset HE431VE (HE400VG Family) assembly for Cummins ISC 8.3L, Cummins ISL 8.9L. It is built around the exact compressor, turbine, housing, and control specification associated with part number 4047231, so fitment should be confirmed from the engine serial number and original turbo tag rather than by engine family alone.

The 4047231 is an HE431VE/HE400VG-family turbo used on Cummins ISC and ISL engines. Its larger variable-geometry frame is designed to combine responsive low-rpm boost with the airflow capacity required by 8.3L and 8.9L applications. The unison ring, nozzle vanes, position sensor, and actuator work together to control turbine flow, so free mechanical movement and correct electronic calibration are essential after installation.

This complete version includes a HOLSET OEM VGT actuator matched to the turbocharger. The actuator and vane mechanism are checked for full travel and correct indexing so the assembly can be installed as a complete unit; the vehicle's required calibration or learn procedure must still be completed after installation. Turbo Centre remanufacturing begins with complete disassembly and thorough cleaning so every critical surface can be inspected. Worn bearings, seals, and service components are replaced; shaft, wheel, housing, and vane-system condition are measured; the rotating assembly is balanced; and the completed turbo is checked for smooth operation, oil sealing, and correct control movement before shipment. This process restores the unit as a complete engineered assembly rather than simply replacing the visibly damaged component.