Cummins QSB 4.5L Turbo Assembly 2017-2023: OEM 5321673RX

Reliable Turbo Replacement for Cummins QSB 4.5L Engines

What Is It?

The Turbo Assembly OEM 5321673RX is a direct-fit turbocharger designed for Cummins QSB 4.5L engines from model years 2017 through 2023. This unit helps regulate air intake pressure into the combustion chamber, ensuring consistent engine operation and emissions compliance in demanding diesel applications.

Why Choose OEM 5321673RX?

Built to Cummins factory specifications, this OEM turbo assembly provides accurate fitment and long-lasting reliability. It includes critical components like the actuator and housings, making it ready to install and compatible with the engine control system. It is designed to maintain the original airflow dynamics and turbo efficiency required by Tier 4 Final emissions standards.

Key Benefits

✅ Designed for 2017–2023 Cummins QSB 4.5L Engines
✅ Maintains Proper Air Intake and Boost Pressure
✅ Compatible with OEM Actuation Systems
✅ Built for Harsh Operating Environments
✅ Supports Emissions Control Systems

Applications

This turbo assembly is used in a range of off-highway, agricultural, and industrial equipment powered by Cummins QSB 4.5L engines. Common applications include construction machinery, compact loaders, and utility equipment requiring regulated airflow under EPA emissions mandates.

Installation Notes

Installation should be completed by a certified technician. Ensure old gaskets and mounting hardware are replaced. Calibrate the actuator if necessary using Cummins-compatible diagnostics. After installation, verify system integrity, clear any active fault codes, and perform a test run to confirm functionality.

Final Thoughts

The OEM 5321673RX turbo assembly delivers trusted airflow control and engine compatibility for Cummins QSB 4.5L platforms. Its precise build and OEM certification make it a dependable choice for maintaining engine efficiency, emissions compliance, and long-term operational stability.