High-Performance Emissions Filtration for Cummins L9 (2022–2024)
What is it?
The Cummins L9 DOC Filter OEM 4394862 is an essential piece of your engine’s aftertreatment system, installed in the Diesel Oxidation Catalyst (DOC). Its purpose is to oxidize harmful exhaust pollutants—such as hydrocarbons and carbon monoxide—into less harmful compounds before the exhaust continues through the system, helping your engine meet emissions standards while maintaining efficiency.
Why choose OEM 4394862?
This DOC filter is engineered specifically for Cummins L9 engines manufactured from 2022 through 2024. Its exact-fit OEM construction allows for seamless integration with the factory aftertreatment components, reducing the risk of emissions system faults and ensuring consistent operation over time. With genuine OEM build quality, you get durability and long-term reliability.
Key Benefits
✅ Built for 2022–2024 Cummins L9 engines
✅ Helps reduce hydrocarbons and carbon monoxide in exhaust
✅ Supports smoother aftertreatment system performance
✅ Designed to tolerate high exhaust temperatures
✅ Direct-fit replacement for easier installation
Applications
This DOC filter is ideal for Cummins L9-powered commercial trucks, vocational vehicles, delivery fleets, and other diesel equipment manufactured between 2022 and 2024 that rely on compliant and effective emissions control systems.
Installation Notes
Before installation, ensure the exhaust and aftertreatment system are fully cooled. Inspect adjacent sensors, gaskets, and connections for wear or contamination. Follow Cummins-recommended installation procedures and torque specifications to ensure proper sealing and dependable performance. After installation, verify that the emissions system is functioning correctly.
Final Thoughts
If your Cummins L9 engine is showing emissions-related alerts or reduced aftertreatment performance, the OEM 4394862 DOC filter offers a dependable, OE-grade replacement solution. Designed for accurate 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.