Cummins X15 SCR 2018-2021: OEM 4394835

Bolster Emissions Efficiency on Cummins X15 (2018–2021)

What is it?
The Cummins X15 SCR OEM 4394835 is a core component in your engine’s emissions aftertreatment system that helps reduce nitrogen oxide (NOx) pollutants from exhaust gases. Working with the diesel exhaust fluid (DEF) system, this SCR assembly assists in converting harmful exhaust byproducts into cleaner output before they exit the vehicle, supporting emissions compliance and smooth engine performance.

Why choose OEM 4394835?
This OEM SCR assembly is built to Cummins’ original specifications for X15 engines produced between 2018 and 2021. Designed for accurate integration with your truck’s factory aftertreatment apparatus, it helps reduce the likelihood of emissions-related fault codes, warning lights, and unexpected engine derates. OEM quality ensures reliability and compatibility with your engine’s design.

Key Benefits
✅ Designed for Cummins X15 engines (2018–2021)
✅ Supports effective NOx reduction with DEF
✅ Helps minimize emissions system warnings and interruptions
✅ Durable construction for high-heat exhaust conditions
✅ Direct-fit design for easier 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 freight haulers, fleet transport, and diesel-powered equipment where reliable emissions control is essential.

Installation Notes
Before installation, make sure the exhaust system has fully cooled. Inspect related sensors, gaskets, clamps, and mounting hardware, and replace 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 concerns begin affecting your Cummins X15 engine, the OEM 4394835 SCR assembly provides a reliable, factory-matched replacement option. Built for proper fitment and consistent performance, it helps keep your vehicle compliant and road-ready. Tamerx has this SCR assembly in stock and ready to ship.