Revitalize Emissions Control on Cummins B6.7 & L9 (2018–2021)
What is it?
The Cummins B6.7, L9 SCR OEM 5418491 is a core part of the engine’s emissions aftertreatment system that helps reduce nitrogen oxide (NOx) pollutants from your diesel engine’s exhaust. Working with the diesel exhaust fluid (DEF) system, this SCR assembly supports the conversion of exhaust gases into cleaner compounds before they exit the vehicle, helping maintain emissions compliance and dependable engine operation.
Why choose OEM 5418491?
Built to Cummins’ original specifications for both B6.7 and L9 engines manufactured from 2018 through 2021, this SCR assembly provides precise fitment and reliable integration with your truck’s factory aftertreatment system. Choosing a genuine OEM component like 5418491 helps lower the chance of emissions-related fault codes, warning lights, and engine derates — giving you dependable compatibility and performance you can trust.
Key Benefits
✅ Compatible with Cummins B6.7 & L9 engines (2018–2021)
✅ Supports effective NOx reduction with DEF
✅ Helps reduce emissions system alerts and interruptions
✅ Built to withstand high exhaust temperatures and everyday use
✅ Direct-fit design for simpler installation
Applications
This SCR assembly is ideal for on-highway trucks, commercial fleets, and vocational vehicles powered by Cummins B6.7 or L9 engines from 2018–2021. It’s commonly used in delivery rigs, service vehicles, and other diesel-powered equipment that require consistent emissions control.
Installation Notes
Before beginning installation, allow the exhaust system to cool completely. Inspect related sensors, mounting hardware, clamps, and gaskets for wear, and replace any worn parts as needed. After installing the SCR assembly, verify that all connections are secure and follow manufacturer-recommended system checks to confirm proper function.
Final Thoughts
When emissions performance concerns arise on your Cummins B6.7 or L9 engine, the OEM 5418491 SCR assembly offers a reliable, factory-matched replacement solution. Designed for proper fitment and consistent operation, it helps keep your vehicle compliant and ready for the road. Tamerx has this SCR assembly in stock and ready to ship.