Strengthen Aftertreatment Stability on Cummins X15 (2018–2021)
What is it?
The Cummins X15 SCR OEM 4394757 is an essential emissions aftertreatment component that helps reduce nitrogen oxide (NOx) pollutants in the exhaust from your diesel engine. Working in concert with the diesel exhaust fluid (DEF) system, this SCR assembly assists in converting exhaust gases into cleaner compounds before they exit the vehicle, promoting regulated emissions performance and dependable operation.
Why choose OEM 4394757?
This OEM SCR assembly is designed to Cummins’ original standards for X15 engines manufactured from 2018 through 2021. Engineered for proper fit and seamless integration with your truck’s factory aftertreatment system, it helps lower the likelihood of emissions fault codes, warning lights, and performance derates. OEM quality ensures compatibility and long-term durability built for your engine.
Key Benefits
✅ Designed for Cummins X15 engines (2018–2021)
✅ Supports effective NOx reduction with DEF
✅ Helps reduce emissions warnings and interruptions
✅ Durable construction for high exhaust heat and routine use
✅ Direct-fit design for simplified installation
Applications
This SCR assembly is ideal for heavy-duty commercial trucks, long-haul tractors, and vocational vehicles powered by Cummins X15 engines from 2018–2021. It’s commonly used in fleet transport, freight hauling, and other diesel-powered applications that rely on consistent emissions control.
Installation Notes
Before installation, let the exhaust system cool completely. Inspect related sensors, clamps, gaskets, and mounting hardware, and replace any worn parts as needed. After installing the SCR assembly, confirm all connections are secure and follow any manufacturer-recommended system checks or resets to verify proper operation.
Final Thoughts
When emissions performance begins affecting your Cummins X15 engine, the OEM 4394757 SCR assembly provides a reliable factory-matched replacement solution. Built 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.