Unlock Cleaner Performance: Cummins ISX DOC 2011–2013
What is it?
The Cummins ISX Diesel Oxidation Catalyst (DOC) for 2011–2013 is a key emissions control component. It transforms carbon monoxide (CO) and unburned hydrocarbons (HC) into less harmful gases before they reach the downstream systems.
Why choose this DOC?
Precisely engineered for ISX engines manufactured between 2011 and 2013, this DOC ensures effective conversion without restricting exhaust flow. Using the correct part helps protect downstream filters or catalysts, reduce backpressure, and minimize fault codes caused by mismatched components.
Key Benefits
✅ Suited for Cummins ISX models (2011–2013)
✅ Catalyzes CO and hydrocarbons into safer exhaust gases
✅ Aids performance of downstream DPF or SCR systems
✅ Built to endure high thermal conditions and extended use
✅ Direct-fit design for straightforward installation
Applications
Ideal for heavy-duty trucks, fleet vehicles, and industrial machines using Cummins ISX engines from 2011 through 2013. This DOC acts as the first oxidation stage in your emissions control train.
Installation Notes
Begin only when the engine and exhaust system have cooled. Remove the old DOC and inspect adjoining pipes, sensors, and seals. Install the replacement with fresh gaskets, torque hardware to Cummins specifications, and check all seals. After installation, clear any fault codes and run a drive or regeneration cycle to confirm proper system function.
Final Thoughts
For your ISX engine, this DOC delivers the right balance of conversion performance, durability, and accuracy—helping maintain emission compliance and system integrity.