Upgrade Emissions Support on Cummins L9 (2018–2021)
What is it?
The Cummins L9 SCR OEM 5418482 is a vital emissions aftertreatment component that helps reduce nitrogen oxide (NOx) pollutants from the exhaust of your diesel engine. Working together with the diesel exhaust fluid (DEF) system, this SCR assembly assists in converting exhaust gases into cleaner compounds before they exit the vehicle, supporting emissions compliance and helping your engine run reliably.
Why choose OEM 5418482?
Built to meet Cummins’ original specifications for L9 engines manufactured from 2018 through 2021, this SCR assembly offers proper fitment and dependable integration with your truck’s factory aftertreatment system. Choosing a genuine OEM part like 5418482 helps lower the risk of emissions-related fault codes, warning lights, and engine derates, giving you long-term compatibility and performance you can trust.
Key Benefits
✅ Designed for Cummins L9 engines (2018–2021)
✅ Supports effective NOx reduction with DEF
✅ Helps reduce emissions system warnings and interruptions
✅ Built to withstand high exhaust temperatures and regular use
✅ Direct-fit design for easier 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 found in delivery rigs, service vehicles, and other diesel-powered equipment that depend on consistent emissions control.
Installation Notes
Before beginning installation, allow the exhaust system to cool completely. Inspect all related sensors, mounting hardware, clamps, and gaskets for wear, replacing any worn components as needed. After installation, verify all connections are secure and follow manufacturer-recommended system checks to confirm proper operation.
Final Thoughts
When emissions system issues affect your Cummins L9 engine, the OEM 5418482 SCR assembly delivers a reliable, factory-aligned replacement solution. With proper fitment and steady performance, it helps keep your vehicle compliant and ready for the road. Tamerx has this SCR assembly in stock and ready to ship.