Cummins 6.7L ISB Turbocharger | 3786222HX | Holset HE300VG | Reman

Genuine Holset factory-remanufactured HE300VG variable-geometry turbocharger for the Cummins ISB 6.7L, complete with the calibrated VGT actuator. Part number 3786222HX restores factory boost control and variable-geometry function. Important: on EPA07–12 engines this turbo requires actuator adapter harness 5347703. Verify your EPA era and application by engine serial before ordering.

Key Features:

• Genuine Holset factory-remanufactured HE300VG VGT turbocharger for the Cummins ISB 6.7L
• Complete unit with calibrated VGT actuator
• Restores factory boost control and variable-geometry function
• On EPA07–12 engines, requires actuator adapter harness 5347703 (sold separately)
• Reman — core return required

Specifications:

• Base part number: 3786222HX (base 3786222 / 3786222H)
• Turbocharger model: Holset HE300VG (variable geometry)
• Condition: Remanufactured (genuine Holset factory reman)
• Actuator: included, calibrated
• Engine: Cummins ISB 6.7L

Compatibility / Fitment:

• Cummins ISB 6.7L — verify EPA era and application by engine serial (ESN)
• Adapter-harness gate: on EPA07–12 engines, requires actuator adapter harness 5347703 / 5347703H
• Confirm this is the correct turbo for your truck (pickup vs. commercial) before ordering
• Common cross-references: 3786222H, 3791741, 4352334

Conclusion:

The 3786222HX is a genuine Holset factory-remanufactured HE300VG VGT turbocharger with a calibrated actuator for the Cummins ISB 6.7L. It restores factory boost control and variable-geometry function. On EPA07–12 engines it requires adapter harness 5347703 — confirm your EPA era and application by engine serial, and note core return is required.