The Cummins L9 Turbo Assembly OEM 5640481 is a high-quality turbocharger designed for 2017–2020 Cummins L9 engines. Built to OEM standards, it ensures precise fitment, consistent boost, and optimized airflow for maximum engine performance.
This turbo assembly improves horsepower, torque, and fuel efficiency, making it ideal for heavy-duty diesel applications. Constructed from durable materials, the Cummins L9 Turbo Assembly OEM 5640481 can withstand extreme temperatures, high pressure, and continuous heavy-duty operation.
A standout feature is its ability to reduce turbo lag, delivering faster spool-up and smoother throttle response. Precision-balanced components provide stable boost and reliable performance under heavy loads, reducing stress on the engine and lowering emissions.
Durability and longevity are hallmarks of the Cummins L9 Turbo Assembly OEM 5640481. Fleet operators and truck owners benefit from decreased downtime, reduced maintenance costs, and consistent engine performance over time.
Installation is straightforward with its direct OEM replacement design, ensuring proper fitment without modifications. By supporting optimal air-fuel ratios, this turbo assembly improves combustion efficiency, reduces engine strain, and extends engine life.
For 2017–2020 Cummins L9 engines, the Cummins L9 Turbo Assembly OEM 5640481 delivers OEM-grade reliability and high-performance turbocharging for heavy-duty diesel trucks.
Key Features & Benefits
- OEM Cummins L9 Turbo Assembly 5640481
- Compatible with 2017–2020 Cummins L9 engines
- Increases horsepower, torque, and fuel efficiency
- Reduces turbo lag and improves throttle response
- Precision-balanced for consistent boost pressure
- Heavy-duty construction for extreme operating conditions
- Direct OEM replacement for easy installation
- Supports emissions reduction and proper combustion
Engine Compatibility
- Cummins L9 (2017–2020)
Vehicle Applications
- Freightliner Cascadia
- Western Star 4700, 5700
- Kenworth T680, T880
- Peterbilt 579, 567
- Other heavy-duty trucks with Cummins L9 engines




