Ensure Clean Exhaust Flow on Cummins B6.7 & L9 (2018–2025)
What is it?
The Cummins B6.7, L9 DOC Filter OEM 5418478 is a key part of your engine’s emissions aftertreatment system that captures soot and other particulate contaminants from the exhaust before it enters the rest of the emissions hardware. Installed within the Diesel Oxidation Catalyst (DOC), this filter supports cleaner exhaust flow and helps reduce harmful emissions output while promoting proper oxidation reactions.
Why choose OEM 5418478?
Built to meet Cummins’ original specifications for both B6.7 and L9 engines manufactured between 2018 and 2025, this DOC filter offers accurate fitment and compatibility with your vehicle’s factory aftertreatment system. Choosing a genuine OEM-matched filter like the 5418478 helps support stable regeneration cycles, reduce the risk of premature clogging, and protect downstream emissions components from excessive wear — promoting consistent performance over time.
Key Benefits
✅ Designed for Cummins B6.7 & L9 engines (2018–2025)
✅ Helps trap soot and lower exhaust particulates
✅ Supports efficient aftertreatment and regeneration cycles
✅ Built to withstand high exhaust temperatures
✅ Direct-fit design for streamlined installation
Applications
This DOC filter is ideal for on-highway trucks, commercial fleets, vocational vehicles, and heavy-duty equipment powered by Cummins B6.7 and L9 engines from 2018–2025. It’s commonly found in delivery rigs, service fleets, regional haulers, and other diesel-powered applications where dependable emissions performance is essential.
Installation Notes
Before installation, make sure the exhaust system has fully cooled. Inspect related sensors, clamps, gaskets, and mounting hardware for wear or damage, and replace any worn components as needed. Once the DOC filter is installed, verify all connections are secure and follow manufacturer-recommended system checks to confirm proper operation.
Final Thoughts
When your Cummins B6.7 or L9 engine’s aftertreatment system needs a reliable DOC filter replacement, the OEM 5418478 offers a factory-matched solution you can trust. Designed for accurate fitment and consistent performance, it helps keep your emissions system operating smoothly and your vehicle ready for the road. Tamerx has this DOC filter in stock and ready to ship.