Cummins ISB 5.9L Turbo Assembly OEM 4089945RX | Diesel Engine Turbocharger 2003–2007

The Cummins ISB 5.9L Turbo Assembly OEM 4089945RX is engineered for 2003–2007 Cummins ISB 5.9L diesel engines, delivering reliable boost pressure, improved airflow, and superior combustion efficiency. This 4089945RX turbocharger is ideal for heavy-duty trucks, commercial vehicles, and industrial machinery.

Built to meet strict OEM standards, the OEM 4089945RX turbo assembly provides consistent, long-lasting performance under demanding conditions. It restores engine power, enhances throttle response, and improves fuel efficiency for both on-road and off-highway applications.

Constructed with high-quality, heat-resistant materials, the ISB 5.9L turbo assembly offers durable and dependable operation. Its direct-fit design ensures quick installation, minimizing downtime and restoring peak engine performance.

Key Features & Benefits

• OEM remanufactured 4089945RX turbo assembly
• Compatible with Cummins ISB 5.9L diesel engines (2003–2007)
• Provides stable and efficient turbo boost
• Enhances horsepower, torque, and fuel efficiency
• Durable, heat-resistant construction for long service life
• Improves throttle response and airflow performance
• Direct bolt-on replacement for easy installation
• Suitable for trucks, industrial machinery, and commercial diesel engines

Engine Compatibility

• Cummins ISB 5.9L Diesel Engine (2003–2007)

Vehicle Applications

• Heavy-duty trucks and commercial vehicles
• Industrial machinery and equipment
• Off-highway diesel applications
• Fleet and construction vehicles

Additional Information

• Part Number: 4089945RX
• Engine Type: Diesel
• Component Type: Turbocharger Assembly
• Condition: OEM / Remanufactured
• Application Type: On-Highway / Off-Highway / Industrial