Advance Emissions Support for Cummins B6.7 (2018–2024)
What is it?
The Cummins B6.7 SCR OEM 4394690 is a core component of the emissions aftertreatment system that helps reduce nitrogen oxide (NOx) emissions from your diesel engine’s exhaust. Working together 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 your engine meet emissions requirements while supporting reliable operation.
Why choose OEM 4394690?
This SCR assembly is engineered to match Cummins’ original specifications for B6.7 engines manufactured between 2018 and 2024. Designed for proper integration with the factory aftertreatment system, it helps lower the likelihood of emissions fault codes, warning lights, and engine derates. Choosing OEM quality gives you a part that fits your engine’s design and performs as intended over time.
Key Benefits
✅ Designed for Cummins B6.7 engines (2018–2024)
✅ Supports effective NOx reduction with DEF
✅ Helps minimize emissions system warnings and interruptions
✅ Built to endure high exhaust temperatures and everyday use
✅ Direct-fit design for easier installation
Applications
This SCR assembly is ideal for on-highway trucks, commercial fleets, and vocational vehicles equipped with Cummins B6.7 engines from 2018–2024. It’s commonly used in delivery rigs, service vehicles, and other diesel-powered equipment that depend on consistent emissions control.
Installation Notes
Before installation, allow the exhaust system to fully cool. Inspect related sensors, gaskets, clamps, and mounting hardware, replacing any worn components as needed. After installing the SCR assembly, verify all connections are secure and follow manufacturer-recommended system checks to ensure proper operation.
Final Thoughts
When emissions performance becomes a concern on your Cummins B6.7 engine, the OEM 4394690 SCR assembly offers a reliable factory-aligned replacement solution. With proper fitment and dependable operation, it helps keep your vehicle compliant and ready for the road. Tamerx has this SCR assembly in stock and ready to ship.

