Restore Aftertreatment Reliability on Cummins L9 (2018–2021)
What is it?
The Cummins L9 SCR OEM 5418680 is an essential emissions aftertreatment component that helps manage nitrogen oxide (NOx) emissions in the exhaust of your L9 diesel engine. Working in coordination with the diesel exhaust fluid (DEF) system, this SCR assembly supports the conversion of exhaust gases into cleaner byproducts before they exit the tailpipe, helping your vehicle maintain proper emissions function and dependable operation.
Why choose OEM 5418680?
This OEM SCR assembly is engineered to match Cummins’ original specifications for L9 engines manufactured from 2018 through 2021. Designed for accurate integration with the factory aftertreatment system, it helps reduce the chances of emissions fault codes, warning lights, and restricted engine performance. OEM quality ensures compatibility and lasting durability.
Key Benefits
✅ Engineered for Cummins L9 engines (2018–2021)
✅ Helps support effective NOx reduction with DEF
✅ Aids in reducing emissions system warnings
✅ Built to handle high exhaust heat and regular use
✅ Direct-fit design for easier installation
Applications
This SCR assembly is ideal for on-highway trucks and commercial vehicles powered by Cummins L9 engines from 2018–2021. It’s commonly used in vocational fleets, heavy-duty transport rigs, and other diesel-powered equipment that require reliable emissions control.
Installation Notes
Allow the exhaust system to cool fully before beginning installation. Inspect all related sensors, gaskets, clamps, and mounting hardware, and replace any worn parts as needed. Once installed, double-check connections and follow any manufacturer-recommended checks or system resets.
Final Thoughts
If emissions-related issues are affecting your Cummins L9 engine, the OEM 5418680 SCR assembly provides a dependable, factory-matched replacement solution. Designed for proper fit and consistent performance, it helps keep your vehicle compliant and ready for everyday use. Tamerx has this SCR assembly available and ready to ship.