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Cummins ISC 8.3L Turbo Assembly OEM 4955704RX – Diesel Turbocharger Replacement 2004-2008


The Cummins ISC 8.3L Turbo Assembly OEM 4955704RX delivers restored power, improved fuel efficiency, and reliable turbo performance for 2004–2008 Cummins ISC diesel engines.

$3,444.72

Vin / Engine Serial Number

Please provide VIN / ESN for identification of correct parts

The Cummins ISC 8.3L Turbo Assembly OEM 4955704RX is a high-quality OEM replacement turbocharger designed specifically for Cummins ISC 8.3L diesel engines produced between 2004 and 2008. The Cummins ISC 8.3L Turbo Assembly OEM 4955704RX plays a critical role in maintaining engine efficiency, improving airflow, and ensuring optimal combustion performance in heavy-duty diesel applications. Built to meet strict OEM standards, this turbocharger provides long-lasting durability, consistent boost pressure, and reliable operation under demanding working conditions.

The Cummins ISC 8.3L Turbo Assembly OEM 4955704RX is engineered to enhance horsepower and torque by forcing compressed air into the engine’s combustion chamber. This results in better fuel combustion, improved throttle response, and increased overall engine performance. When a turbocharger begins to fail, it can lead to reduced engine power, excessive exhaust smoke, poor fuel economy, and potential engine damage. Replacing a worn turbo with the Cummins ISC 8.3L Turbo Assembly OEM 4955704RX ensures your engine continues to perform at its best.

Constructed from premium-grade, heat-resistant materials, the Cummins ISC 8.3L Turbo Assembly OEM 4955704RX is built to withstand extreme temperatures and high-pressure environments typical of diesel engines. Its precision-balanced rotating assembly reduces vibration, minimizes wear, and extends the lifespan of the turbocharger. This makes it an ideal solution for heavy-duty trucks, commercial vehicles, and fleet operations that demand reliable and consistent performance.

The Cummins ISC 8.3L Turbo Assembly OEM 4955704RX is designed as a direct-fit replacement, allowing for easy installation without the need for modifications. This ensures reduced downtime and lower labor costs, making it a practical choice for mechanics and vehicle owners alike. The turbo assembly integrates seamlessly with existing engine components, ensuring proper airflow, efficient exhaust gas management, and accurate boost control.

In addition to restoring lost power, the Cummins ISC 8.3L Turbo Assembly OEM 4955704RX helps improve fuel efficiency by optimizing the air-to-fuel ratio within the engine. Proper turbo function reduces unnecessary fuel consumption and lowers emissions, helping your vehicle meet environmental standards while maintaining peak performance. This is especially important for commercial vehicles operating under strict emission regulations.

The Cummins ISC 8.3L Turbo Assembly OEM 4955704RX is widely used in a range of heavy-duty applications, including medium-duty trucks, commercial fleets, and industrial diesel equipment powered by Cummins ISC 8.3L engines. Its robust construction and OEM engineering make it a dependable choice for maintaining engine reliability in demanding environments such as long-haul transportation, construction, and towing operations.

Choosing the Cummins ISC 8.3L Turbo Assembly OEM 4955704RX ensures you are investing in a turbocharger that meets original manufacturer specifications. It delivers consistent boost pressure, reduces turbo lag, and enhances overall engine responsiveness. Whether you are replacing a failed turbo or upgrading your engine’s performance, this OEM turbo assembly provides a reliable and cost-effective solution for keeping your diesel engine running smoothly.


Key Features & Benefits

✔ Genuine OEM 4955704RX turbo assembly
✔ Designed for Cummins ISC 8.3L engines (2004–2008)
✔ Restores engine power and torque output
✔ Improves fuel efficiency and combustion performance
✔ Reduces turbo lag and enhances throttle response
✔ High-strength, heat-resistant construction
✔ Precision-balanced for durability and smooth operation
✔ Direct-fit design for easy installation
✔ Suitable for heavy-duty and commercial applications


Engine Compatibility

  • Cummins ISC 8.3L Diesel Engine
  • Model Years: 2004–2008

Vehicle Applications

  • Medium-duty trucks with Cummins ISC 8.3L engines
  • Commercial diesel vehicles and fleet trucks
  • Industrial and heavy-duty diesel equipment

Frequently Asked Questions

Is the OEM 4955704RX a genuine Cummins turbo?

Yes, it is built to OEM specifications to ensure proper fit, performance, and durability.

What engines are compatible with this turbo assembly?

This turbo fits Cummins ISC 8.3L diesel engines from 2004 to 2008.

What are the signs of a failing turbo?

Common signs include loss of power, excessive smoke, poor fuel efficiency, and unusual noises.

Is this turbo easy to install?

Yes, it is a direct-fit replacement designed for straightforward installation.

Can this turbo improve fuel efficiency?

Yes, by optimizing airflow and combustion, it helps improve fuel economy and engine performance.