Cleaner Combustion Starts Here: Cummins ISX DOC (2011–2013)
What is it?
The Cummins ISX Diesel Oxidation Catalyst (DOC) for 2011–2013 engines is a key part of the emissions control system. It helps convert harmful exhaust gases like carbon monoxide (CO) and unburned hydrocarbons (HC) into cleaner emissions, ensuring your engine runs efficiently while meeting environmental standards.
Why choose this DOC?
Built specifically for Cummins ISX engines from 2011–2013, this DOC provides dependable oxidation performance and steady exhaust flow. The precise OEM-style design reduces the risk of backpressure, safeguards downstream components such as the DPF and SCR, and helps maintain overall system balance for long-term reliability.
Key Benefits
✅ Engineered for Cummins ISX engines (2011–2013)
✅ Reduces CO and hydrocarbon emissions for cleaner output
✅ Helps extend the lifespan of DPF and SCR systems
✅ Built to handle high temperatures and demanding operation
✅ Direct-fit design allows for fast and accurate installation
Applications
Perfect for heavy-duty trucks, buses, and machinery equipped with Cummins ISX engines built between 2011 and 2013. This DOC serves as the first step in the aftertreatment process, ensuring cleaner combustion and smoother performance on the road.
Installation Notes
Work only on a cool exhaust system. Remove the old DOC and inspect related parts—pipes, clamps, and sensors—for signs of wear or corrosion. Install the new DOC with new gaskets, torque bolts to Cummins specifications, and clear any diagnostic codes. Complete a short drive or regeneration cycle to confirm proper functionality.
Final Thoughts
For Cummins ISX engines, this DOC provides the perfect combination of quality, durability, and fit. It’s designed to keep your emissions system running clean and your engine performing at its best—mile after mile.