Cummins B6.7, L9 DOC Filter 2018-2024: OEM 4394761

Essential Emissions Filtration for Cummins B6.7 & L9 (2018–2024)

What is it?
The Cummins B6.7, L9 DOC Filter OEM 4394761 is a crucial emissions control component located in the Diesel Oxidation Catalyst (DOC) of your engine’s aftertreatment system. It helps oxidize harmful exhaust pollutants—like hydrocarbons and carbon monoxide—into less harmful compounds before the exhaust continues through the rest of the system, promoting cleaner emissions and better overall engine performance.

Why choose OEM 4394761?
This DOC filter is engineered specifically for Cummins B6.7 and L9 engines manufactured from 2018 through 2024. Its precision OEM construction ensures seamless integration with your vehicle’s original emissions hardware, helping reduce system faults and maintain reliable emissions control throughout daily operation. With genuine OEM quality, you get durability and consistent performance you can rely on.

Key Benefits
✅ Designed for Cummins B6.7 & L9 engines (2018–2024)
✅ Helps decrease hydrocarbons and carbon monoxide in exhaust
✅ Supports efficient aftertreatment system function
✅ Built to handle high-temperature exhaust environments
✅ Direct-fit replacement for simplified installation

Applications
This DOC filter is ideal for Cummins B6.7- and L9-powered commercial trucks, vocational vehicles, delivery fleets, and other diesel-driven equipment manufactured between 2018 and 2024 that depend on compliant and efficient emissions control systems.

Installation Notes
Before installation, ensure the exhaust and aftertreatment system are fully cooled. Inspect adjacent sensors, gaskets, and connections for wear, damage, or contamination. Follow Cummins-recommended installation procedures and torque specifications to ensure proper sealing and dependable operation. After installation, verify that the emissions system is functioning correctly.

Final Thoughts
If your Cummins B6.7 or L9 engine is showing emissions-related warnings or reduced aftertreatment effectiveness, the OEM 4394761 DOC filter delivers a dependable, OE-grade replacement solution. Designed for exact fit and consistent emissions control, it helps keep your engine compliant and running efficiently. Tamerx has this DOC filter in stock and ready to ship.