Power That Breathes Clean: Cummins ISX DOC (2011–2013)
What is it?
The Cummins ISX Diesel Oxidation Catalyst (DOC) for 2011–2013 engines is a crucial emissions component that transforms harmful exhaust gases—like carbon monoxide (CO) and unburned hydrocarbons (HC)—into cleaner, less toxic emissions before they reach downstream systems.
Why choose this DOC?
Designed specifically for Cummins ISX engines manufactured between 2011 and 2013, this DOC ensures consistent exhaust oxidation and smooth flow. Its precision-engineered fit reduces backpressure risks, enhances fuel efficiency, and safeguards key components such as the DPF and SCR from premature wear or failure.
Key Benefits
✅ Custom-fit for Cummins ISX engines (2011–2013)
✅ Reduces harmful exhaust gases for cleaner operation
✅ Protects downstream DPF and SCR components
✅ Built from durable materials to handle heavy-duty use
✅ Simple, direct-fit installation—no guesswork needed
Applications
This DOC is ideal for heavy-duty trucks, buses, and equipment powered by Cummins ISX engines from 2011–2013. Acting as the first step in the aftertreatment process, it helps maintain cleaner emissions, smoother performance, and dependable operation over long hauls.
Installation Notes
Ensure the exhaust system is completely cool before installation. Remove the old DOC, inspect sensors, pipes, and seals for wear, and replace as necessary. Install the new DOC using fresh gaskets, torque bolts to Cummins specifications, and clear any fault codes. Complete a regeneration or short drive cycle to verify system performance.
Final Thoughts
The Cummins ISX DOC (2011–2013) offers the durability and precision your engine needs to stay clean and compliant. With its rugged build and accurate fit, it keeps your truck running efficiently and ready for the demands of the road.