Clean Emissions Component for Cummins B6.7 Engines (2018–2024)
What is it?
The Cummins B6.7 DOC Filter OEM 4394940 is an important emissions control part positioned within the Diesel Oxidation Catalyst (DOC) of your engine’s aftertreatment system. It helps oxidize harmful exhaust pollutants such as hydrocarbons and carbon monoxide into less harmful substances before the exhaust continues through the system, supporting cleaner operation and better engine performance.
Why choose OEM 4394940?
This DOC filter is engineered specifically for Cummins B6.7 engines manufactured between 2018 and 2024. Its exact-fit OEM design ensures proper compatibility with your vehicle’s original aftertreatment components, helping reduce system faults and maintain emissions compliance. With genuine OEM construction, you’re choosing durability and consistent performance you can count on.
Key Benefits
✅ Designed for Cummins B6.7 engines (2018–2024)
✅ Helps reduce hydrocarbons and carbon monoxide in exhaust
✅ Supports improved aftertreatment system function
✅ Built to withstand high-temperature exhaust conditions
✅ Direct-fit replacement for easier installation
Applications
This DOC filter is ideal for Cummins B6.7-powered commercial trucks, vocational vehicles, delivery fleets, and other diesel equipment manufactured from 2018 through 2024 that depend on effective emissions control systems for daily performance.
Installation Notes
Make sure the exhaust and aftertreatment system are fully cooled before beginning installation. Inspect nearby sensors, gaskets, and connections for wear or contamination. Follow Cummins-recommended installation procedures and torque specifications to ensure a proper seal and reliable operation. After installation, verify that the emissions system is functioning correctly.
Final Thoughts
If your Cummins B6.7 engine shows emissions-related alerts or diminished aftertreatment performance, the OEM 4394940 DOC filter provides a trustworthy, OE-grade replacement solution. Designed for precise fit and consistent emissions control, it helps keep your engine compliant and running smoothly. Tamerx has this DOC filter in stock and ready to ship.