Preserve Emissions Flow on Cummins QSB 6.7L & ISB 6.7L (2011–2020)
What is it?
The Cummins QSB 6.7L, ISB 6.7L SCR Filter OEM 4387663 is a critical emissions aftertreatment component that captures soot and particulate contaminants from exhaust gases before they reach the Selective Catalytic Reduction (SCR) system. By trapping these particles early in the process, this SCR filter helps maintain cleaner exhaust flow, supports efficient NOx conversion, and contributes to reliable system performance.
Why choose OEM 4387663?
This SCR filter is engineered to meet Cummins’ original specifications for both QSB 6.7L and ISB 6.7L engines produced between 2011 and 2020. As a genuine OEM part, the 4387663 ensures precise fitment and seamless integration with your factory emissions system. Using an OEM-matched filter helps reduce the risk of clogging, supports stable regeneration cycles, and protects downstream SCR components from premature wear.
Key Benefits
✅ Designed for Cummins QSB 6.7L & ISB 6.7L engines (2011–2020)
✅ Helps capture soot and limit particulate contamination
✅ Supports consistent SCR regeneration and emissions control
✅ Built to withstand high exhaust temperatures
✅ Direct-fit design for easier replacement
Applications
This SCR filter is ideal for light and medium-duty commercial trucks, service vehicles, and industrial equipment powered by Cummins QSB 6.7L or ISB 6.7L engines from 2011–2020. It’s commonly used in delivery fleets, vocational rigs, utility trucks, and other diesel-powered equipment that depend on dependable emissions performance.
Installation Notes
Before installation, allow the exhaust system to cool completely. Inspect related sensors, gaskets, clamps, and mounting hardware for wear, and replace any worn components as needed. Once the SCR filter is installed, verify all connections are secure and follow manufacturer-recommended system checks to confirm proper operation.
Final Thoughts
When it’s time to replace a worn or clogged SCR filter on your Cummins QSB 6.7L or ISB 6.7L engine, the OEM 4387663 provides a reliable, factory-matched solution. With accurate fitment and consistent performance, it helps keep your emissions system operating efficiently and your vehicle ready for the road. Tamerx has this SCR filter in stock and ready to ship.