Advanced Oxidation Catalyst for Cummins ISX Engines (2008–2010)
What is it?
The Cummins ISX DOC (Diesel Oxidation Catalyst) for model years 2008–2010 is a critical emissions component. It transforms carbon monoxide (CO) and unburned hydrocarbons (HC) in your exhaust into less harmful compounds before they pass through the rest of the aftertreatment system.
Why choose this DOC?
Specifically designed for ISX engines of 2008–2010, this DOC balances conversion performance with balanced exhaust flow. Choosing the proper unit helps protect downstream components, avoid excess backpressure, and prevent fault codes or system failures tied to mismatched parts.
Key Benefits
✅ Made for Cummins ISX engines (2008–2010)
✅ Converts CO and hydrocarbons into safer byproducts
✅ Shields the rest of your aftertreatment system
✅ Durable design handles high thermal stress
✅ Direct-fit unit for accurate and efficient installation
Applications
Ideal for heavy-duty trucks, bus fleets, and industrial units running Cummins ISX engines produced between 2008 and 2010. It functions as the initial catalytic step in exhaust treatment before gases reach DPF or SCR systems.
Installation Notes
Ensure the engine and exhaust are fully cooled before starting. Remove the old DOC and inspect adjacent piping, flanges, sensors, and seals for wear. Install the replacement with fresh gaskets, torque all fasteners to Cummins specifications, and confirm sealing integrity. After installation, clear any stored fault codes and run a regeneration or drive cycle to verify proper system behavior.
Final Thoughts
If your ISX engine needs a robust oxidation solution, this DOC is engineered to deliver the right combination of performance, fit, and durability to support your emissions system from the first stage onward.