Remanufactured 3780090 Cummins ISL 8.9L Holset HE300VG Turbocharger

The 3780090 Turbocharger is a purpose-matched Holset HE300VG assembly for Cummins ISL 8.9L, Cummins ISC and L9 applications where specified. It is built around the exact compressor, turbine, housing, and control specification associated with part number 3780090, so fitment should be confirmed from the engine serial number and original turbo tag rather than by engine family alone.

This HE300VG unit is calibrated for Cummins ISL 8.9L applications used in motorhome, bus, vocational, and medium-duty service. The variable geometry system gives the larger ISL engine quick response at low speed while preserving the turbine flow needed during sustained load.

Accurate vane control supports boost, EGR operation, exhaust braking, and aftertreatment temperature management across a wide duty cycle.

This is the turbo-only version and is supplied without the electronic actuator. The existing actuator should only be reused after its condition, compatibility, and calibration are verified; a worn or incorrectly indexed actuator can cause boost, vane-position, and engine-brake faults even when the turbocharger itself is sound. 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.