DOC Fits Cummins | 4394906

Ensure effective emissions control and extended engine reliability with the Cummins DOC 4394906 from American Radiator. Designed to integrate seamlessly into Cummins after-treatment systems, this high-performance Diesel Oxidation Catalyst reduces harmful hydrocarbons and carbon monoxide while helping protect downstream components like diesel particulate filters (DPFs).

Built to meet OEM standards, the 4394906 DOC features a robust metal housing and a high-efficiency catalyzing substrate, delivering dependable performance in every operating environment. Its direct-fit design ensures easy installation with no modifications needed, saving time and reducing downtime.

This essential emission control component is engineered to withstand intense heat cycling, vibration, and the harsh demands of heavy-duty applications. By efficiently oxidizing emissions, it supports cleaner exhaust output, improved fuel efficiency, and enhanced system durability—helping extend service intervals and lower maintenance costs.

Backed by the trusted reliability of American Radiator, the Cummins DOC 4394906 offers long-term function, cleaner emissions, and smoother engine performance—mile after mile.