Volvo/Mack 3775774 Holset HE400VG Remanufactured Turbocharger

Precision Remanufacturing for Volvo D11/D13 & Mack MP7/MP8

This Turbo Kings remanufactured Holset HE400VG turbocharger (Part/Assembly #3775774) is engineered for Volvo and Mack platforms using the D11, D13, MP7, and MP8 engines. The HE400VG is the core of the VGT system on these trucks, controlling boost pressure, exhaust flow, and EGR performance through dynamic vane modulation. Our rebuild restores full vane sweep, actuator compatibility, and factory-correct flow characteristics so the turbo performs exactly as intended under load.

Each unit is remanufactured with OEM-grade components, precision machining, and high-speed VSR balancing. This ensures clean low-RPM response, strong mid-range torque, and stable regen performance — all critical for modern Volvo/Mack SCR/EGR emissions systems.

Seal Integrity, Geometry Calibration & VGT Reliability

VGT reliability depends on restoring component geometry and eliminating soot-related binding. Turbo Kings fully remanufactures every HE400VG to OEM performance standards:

• Restored vane pack and nozzle ring with high-temperature alloys

• Re-machined turbine housing ring tracks

• Correct vane end-play and unison ring clearance

• New bearings, thrust kit, piston rings, and oil seals

• Precision-balanced CHRA to sub-0.001″ tolerances

• Compressor and turbine housings inspected for heat distortion

• Actuator pad resurfaced for correct alignment and seating

Every turbo undergoes full mechanical vane sweep calibration and airflow verification. Final validation ensures the VGT responds instantly to ECM commands once the actuator is calibrated on the truck.

What Makes Turbo Kings Different

Our remanufacturing process is engineered specifically for the demanding Volvo/Mack platforms, which operate hotter and accumulate more soot than many other OEM systems. Turbo Kings provides:

• High-speed VSR balancing up to 180,000 RPM

• Stainless-steel vane components for long-term wear resistance

• Zero-leak oil seal validation

• True OE-spec flow matching

• Hot-gas bench simulation for exhaust brake performance

• Housing resurfacing for perfect actuator alignment

This ensures smooth VGT operation, optimal boost curve consistency, reliable regen cycles, and extended service life for heavy-duty fleet operations.

Our Process at a Glance

• Full teardown & inspection

• Housing machining, blasting & resurfacing

• New thrust and journal bearing system

• New piston ring and sealing system

• Turbine/compressor balancing

• Vane pack restoration & sweep calibration

• CHRA VSR balancing

• Exhaust brake & backpressure simulation testing

• Final QC inspection before packaging

Why Fleets and Owner-Operators Choose Turbo Kings

Turbo Kings reman HE400VG units consistently deliver OEM-matched performance with long-term reliability. Whether used in long haul, regional fleet, construction, or port drayage applications, this unit is built to withstand high loads, constant heat cycles, and soot exposure while maintaining stable boost and VGT operation.

Reference Numbers

3775774, 20941931, 20941932, 20941933, 21012875, 21012876, 21012877, 21080078, 21080079, 21080080, 21178032, 21178033, 21178034, 21424404, 21424405, 21424406, 21424419, 21592749, 21592751, 21597914, 22014294, 22014295, 22014296, 22883059, 22883060, 2835093, 2835094, 2835095, 2835096, 2835097, 2840771, 2840773, 2840775, 2840777, 2840779, 3769170, 3769171, 3769180, 3769181, 3769182, 3769182RX, 3773434, 3773435, 3776801, 3776805, 3791468, 3791469, 3791493, 3791494, 3791494RV, 3791495, 4031002, 403100200, 403100200H, 403100200HX, 4031002H, 4031002HX, 4031003, 403100300, 403100300HX, 4031003H, 4031003HX, 4031205, 403120500H, 4031205H, 4031205HX, 4031239, 40312NX, 40312RX, 40313HX, 4046514, 4046515, 4046516, 4046517, 4046518, 4047365, 4047366, 4047367, 4047368, 4047369, 4048068, 4048069, 5328825, 5328826, 5353325, 5353326, 5353345, 5355440, 5355445, 5355446, 5355450, 5355450RV, 5355451, 5355452, 5451497, 5451879, 6455783, 85003608, 85013027, 85013028, 85013029, 85013053, 85013710, 85021419, 85021420, 85110393, 85115989, 85115990, 85115991, 85123286, 85123288, 85123290, 85136170, 85136171, 85136180, 85151098, 85151099, 85213710, D92080687R, TS4047367, TS4047367R