The (3771658-RMN) is a remanufactured turbocharger. Each remanufactured unit is rebuilt to original factory specifications and backed by PT Turbo’s 12-month unlimited-mile warranty.

Remanufactured Holset HE300VG/HE351VE Turbocharger – Cummins ISB 6.7L Engines (Without Actuator)

Restore your Cummins ISB 6.7L engine performance with this remanufactured Holset HE300VG/HE351VE turbocharger. Professionally remanufactured to OEM standards, this unit is fully balanced and tested for durability and reliability. Electronic actuator is not included. Backed by a 12-month warranty for peace of mind.

Key Features

• Direct OEM replacement: Fits Cummins ISB 6.7L engines (EPA 10 emissions).
• Actuator not included: Reuse or replace your existing actuator.
• OEM remanufacture: Built using genuine Holset components – no aftermarket internals.
• Balanced & tested: High-speed VSR balanced and validated for boost performance, oil sealing, and durability.
• Warranty: 12-month limited warranty included.

Specifications

• Brand: Holset
• Condition: Remanufactured
• Turbo Model: HE300VG / HE351VE
• Bearing Type: Journal
• Center Housing Cooling: Oil
• Compressor Housing: Aluminum, 172° angle, natural finish (included)
• Turbine Housing: Cast iron, 110° angle, natural finish (included)
• Mounting Bracket/Hardware: Not included
• Gaskets/Seals: Not included

Bill of Material

• 3791865H: New Holset HE300VG Turbocharger Kit (without actuator) for Cummins ISB 6.7L EPA 10 engines

Cross References

This turbo replaces or supersedes the following part numbers:

3786778HX, 4955402, 5322099HX, 5325908, 5325909, 5325892, 4352325, 4352326, 3786778, 3786778H, 238-286-013, 378677800HX, 2839136, 4955398, 4044384, 4044385, 378677800H, 379985200H, 379985200HX, 3799852HX, 3786778H, 3799852H, 2834989, 2837246, 2837247, 2837259, 2839138, 2839148, 2839149, 2839156, 3060231, 3771645, 3771646, 3771649, 3771659, 3786105, 3791764, 3791787, 3791788, 3799852, 4043425, 4043429, 4043430, 4044394, 4047280, 4955397NX, 4955397RX, 4955398NX, 4955398RX, 4955543, 4955543NX, 4955543RX, 5322099, 5322099H, 5322099NX, 5322099RX, 2834847, 2839136, 3771658, 3786778, 3791772, 4955397, 378677800, 379985200, 532209900, 532209900H, 532209900HX, 5608760, 6509442, 3791865HX, 3791865H

Our Remanufacturing Process

• Disassembly & cleaning: Turbo completely disassembled, cleaned, and inspected.
• Component replacement: Bearings, seals, and thrust pieces replaced with new OEM-grade parts.
• Machining & reassembly: Housings machined to OEM tolerances, reassembled to factory specifications.
• Balancing: VSR high-speed balanced to exceed OEM standards for smooth operation and longevity.
• Testing: Boost response and oil integrity fully verified before shipping.

Why Choose Our Reman Turbo?

• OEM reliability: Genuine Holset quality, fully remanufactured to original specifications.
• Cost-effective: Save compared to new OEM while maintaining identical performance.
• Environmentally responsible: Remanufacturing reduces waste while delivering OEM quality.
• Warranty-backed: Comes with 12-month limited warranty for peace of mind.

Note: Electronic actuator, gaskets, seals, and mounting hardware are not included. Professional installation is recommended.

All PT Turbo units are professionally remanufactured OEM turbos — no aftermarket internals are used.

About This Remanufactured HE300VG/HE351VE — Cummins ISB 6.7L (Part # 3771658RX)

Part number 3771658RX is a remanufactured Holset turbocharger exchange unit covering specific Cummins ISB 6.7L diesel applications in Ram 2500 and 3500 trucks. The HE300VG and HE351VE are closely related variable geometry turbocharger designs that were used across different model years and power ratings of the 6.7L Cummins. This specific part number fits a defined subset of those applications — confirm against your existing part number before ordering.

This unit is rebuilt at PT Turbo in San Bernardino, California, where we have been rebuilding Cummins ISB turbochargers since the 6.7L platform launched. All wear components are replaced and the cartridge is dynamically balanced before shipment.

Remanufacturing Includes

• Complete disassembly, cleaning, and inspection
• New journal bearings and upgraded thrust bearing
• Compressor and turbine piston ring seals
• O-rings, gaskets, and hardware
• CHRA high-speed balancing and leak-down test

Oil System Inspection Before Installation

Before installing any replacement turbocharger on a 6.7L Cummins, inspect the oil supply banjo fitting and feed line for carbon buildup or restriction. A restricted oil supply line will destroy a replacement turbocharger prematurely. Pre-oil the turbo before initial startup by cranking the engine without starting (disable fuel) until oil pressure registers, then start and idle for 60 seconds before driving. PT Turbo ships from San Bernardino, CA — contact us with fitment questions or for pre-installation guidance.

For the full oil system inspection checklist and break-in steps, see our guide to making your turbocharger last — the ISB 6.7L-specific notes are covered.