Revamp Emissions Control on Cummins L9 (2018–2021)
What is it?
The Cummins L9 SCR OEM 5418146 is a key emissions aftertreatment component designed to help reduce nitrogen oxide (NOx) pollutants from your diesel engine’s exhaust. Working alongside the diesel exhaust fluid (DEF) system, this SCR assembly supports the conversion of exhaust gases into cleaner compounds before they exit the vehicle, helping your engine maintain emissions compliance and steady performance.
Why choose OEM 5418146?
Built to Cummins’ original specifications for L9 engines manufactured from 2018 through 2021, this SCR assembly offers proper fitment and reliable integration with your truck’s factory aftertreatment system. Choosing a genuine OEM part like 5418146 helps lower the risk of emissions-related fault codes, warning lights, and engine derates, giving you compatibility and performance you can depend on over time.
Key Benefits
✅ Compatible with Cummins L9 engines (2018–2021)
✅ Supports effective NOx reduction with DEF
✅ Helps minimize emissions system alerts and interruptions
✅ Built for durability under high exhaust temperatures
✅ Direct-fit design for straightforward installation
Applications
This SCR assembly is ideal for on-highway trucks, vocational vehicles, and commercial fleets powered by Cummins L9 engines from 2018–2021. It’s commonly used in delivery rigs, service vehicles, and other diesel-powered equipment that require dependable emissions control.
Installation Notes
Before installation, allow the exhaust system to cool completely. Inspect all related sensors, mounting hardware, clamps, and gaskets, and replace any worn components as needed. After installing the SCR assembly, confirm that all connections are secure and follow manufacturer-recommended system checks to ensure proper operation.
Final Thoughts
When emissions performance issues arise on your Cummins L9 engine, the OEM 5418146 SCR assembly provides a dependable, factory-aligned replacement solution. With proper fitment and consistent performance, it helps keep your vehicle compliant and ready for the road. Tamerx has this SCR assembly in stock and ready to ship.