Buy 3798315RX - Genuine Cummins Turbocharger HE351VE ISB/ISL 6.7L - wisentpartscenter.com

Description

The Genuine Cummins Turbocharger is a variable geometry turbocharger (VGT) designed for compatible Cummins ISB 6.7L diesel engines. Part of the Holset HE300VG/HE351VE turbocharger family, it uses adjustable turbine geometry to regulate exhaust gas flow and boost pressure across different engine operating conditions. This turbocharger supports engine response, power delivery, and emissions-system performance in medium-duty trucks, buses, and commercial vehicles equipped with the corresponding Cummins engine configuration.

Key Functions

- Uses exhaust gas energy to compress intake air and increase engine boost pressure.
- Adjusts turbine geometry to improve boost response at different engine speeds and loads.
- Supports engine torque, acceleration, and power delivery.
- Helps manage exhaust backpressure during engine operation.

Fitment & Specifications

- Brand: Cummins / Holset
- Part Type: Variable Geometry Turbocharger (VGT)
- Engine: Cummins ISL and ISB 6.7L
- Turbocharger Family: Holset HE300VG / HE351VE

Verify fitment with us before ordering to ensure the correct part for your application.

Purpose of the Part

The Cummins Turbocharger uses exhaust gas energy to drive a turbine connected to an air compressor, increasing the amount of pressurized air supplied to the engine. Its variable geometry mechanism adjusts turbine flow to improve boost response at lower engine speeds while maintaining effective airflow under higher loads. The turbocharger also helps regulate exhaust backpressure, supporting engine performance and the operation of the emissions-control system.

Issue Symptoms / When to Replace

A worn or malfunctioning variable geometry turbocharger can affect engine boost pressure and overall performance. Common symptoms include:

- Reduced engine power or poor acceleration.
- Low, excessive, or inconsistent boost pressure.
- Check Engine light or turbocharger control faults.
- Excessive black exhaust smoke under load.
- Unusual whining, grinding, or other turbocharger noises.
- Oil leakage or increased engine oil consumption.
- Sticking variable geometry mechanism or restricted vane movement.

Similar symptoms can also result from a faulty electronic actuator, damaged boost-pressure sensors, charge-air leaks, restricted intake or exhaust systems, or lubrication problems. Proper diagnostics should confirm the cause before replacing the turbocharger.

Brand Information

Cummins manufactures diesel engines and power systems for commercial vehicles, industrial equipment, and heavy-duty applications. Holset is the turbocharger brand of Cummins Turbo Technologies, which develops turbocharging systems for diesel engines. Its variable geometry turbochargers are engineered to support engine airflow management, boost response, and emissions-system operation.

Installation Notes

Before installing the Cummins Turbocharger, inspect the oil supply and drain lines for restrictions, contamination, or damage. Prime the turbocharger with clean engine oil and check the intake and exhaust systems for debris or leaks. If an electronic actuator is installed or transferred, follow the applicable Cummins procedure for actuator installation and calibration before returning the engine to service.

How to Identify an OEM Part

The Genuine Cummins Turbocharger can be identified by the Holset and Cummins markings cast directly into the compressor housing and the factory identification plate attached to the housing. The identification plate contains the turbocharger model and manufacturing identification numbers.

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Warranty & Return Information
Warranty Information

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Return Information

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