Next-Gen Catalytic Support: Cummins ISX DOC 2011–2013
What is it?
The Cummins ISX DOC (Diesel Oxidation Catalyst) for 2011–2013 engines converts carbon monoxide (CO) and unburned hydrocarbons (HC) into less harmful gases before they pass through the rest of the emission system.
Why choose this DOC?
Specifically built for ISX engines from 2011 to 2013, this DOC ensures efficient oxidation without imposing excess exhaust resistance. Using the correct unit helps safeguard downstream components, lower backpressure risk, and reduce fault errors tied to incompatible replacements.
Key Benefits
✅ Calibrated for Cummins ISX engines (2011–2013)
✅ Transforms CO and hydrocarbons into safer exhaust output
✅ Supports downstream DPF or SCR systems
✅ Durable design tolerates high thermal stress and long use
✅ Direct-fit component makes installation accurate and straightforward
Applications
Ideal for heavy-duty trucks, industrial fleets, and equipment running Cummins ISX engines produced in 2011–2013. This DOC functions as the first catalytic barrier in the exhaust treatment path.
Installation Notes
Ensure the engine and exhaust system have cooled fully. Remove the existing DOC and inspect adjoining pipework, sensors, and seals for wear. Install the replacement with fresh gaskets, torque all hardware to Cummins specifications, and verify sealing. After installation, clear any stored error codes and carry out a drive or regeneration cycle to confirm proper operation.
Final Thoughts
For ISX engines, this DOC offers balanced conversion power, strong durability, and the correct form factor to support your emission system’s reliability and longevity.