Reliable Aftertreatment Filter for Cummins B6.7 & L9 (2018–2024)
What is it?
The Cummins B6.7, L9 DOC Filter OEM 4394820 is a critical emissions component that fits into the Diesel Oxidation Catalyst (DOC) of your engine’s aftertreatment system. It helps break down harmful exhaust pollutants like hydrocarbons and carbon monoxide into less harmful substances, contributing to cleaner emissions and efficient engine operation.
Why choose OEM 4394820?
This DOC filter is specifically engineered for Cummins B6.7 and L9 engines manufactured from 2018 through 2024. Its precise design ensures accurate fitment and proper integration with your vehicle’s existing emissions system, helping reduce faults, improve durability, and maintain performance under daily use. OEM quality means dependable operation you can trust.
Key Benefits
✅ Built for 2018–2024 Cummins B6.7 & L9 engines
✅ Helps reduce hydrocarbons and carbon monoxide in exhaust
✅ Supports smoother emissions system performance
✅ Designed to withstand high-temperature exhaust conditions
✅ Direct replacement for easy installation
Applications
This DOC filter fits a range of Cummins-powered equipment and vehicles from 2018 to 2024. It’s ideal for light- to heavy-duty commercial trucks, vocational vehicles, delivery fleets, and other diesel-powered machines that rely on effective emissions control for compliance and performance.
Installation Notes
Before installation, make sure the exhaust and aftertreatment system are completely cool. Inspect nearby sensors, gaskets, and connectors for wear or damage. Follow Cummins-recommended installation and torque procedures to ensure proper sealing. After installation, verify the emissions system is functioning correctly.
Final Thoughts
When your Cummins B6.7 or L9 engine shows emissions system alerts or reduced aftertreatment effectiveness, the OEM 4394820 DOC filter provides a reliable, OE-grade replacement option. Designed for accurate fit and consistent performance, it helps keep your emissions system working efficiently. Tamerx has this DOC filter in stock and ready to ship.