Elevate Emissions Control: Cummins ISX DOC 2011–2013
What is it?
The Cummins ISX Diesel Oxidation Catalyst (DOC) for 2011–2013 is a key exhaust component that converts carbon monoxide (CO) and unburned hydrocarbons (HC) into safer gases before they continue through the emissions system.
Why choose this DOC?
Purpose-built for ISX engines from 2011 to 2013, this DOC delivers the right balance of conversion efficiency and exhaust flow. Installing the correct unit protects downstream filters, prevents backpressure issues, and minimizes the chance of diagnostic faults from mismatched parts.
Key Benefits
✅ Designed for Cummins ISX engines (2011–2013)
✅ Converts CO and hydrocarbons into safer byproducts
✅ Helps support downstream DPF or SCR systems
✅ Durable build to resist high temperatures and continuous use
✅ Direct-fit design for accurate and dependable installation
Applications
This DOC is ideal for heavy-duty trucks, fleets, and industrial equipment powered by Cummins ISX engines built in 2011–2013. It functions as the first catalytic stage in your vehicle’s emissions path before further treatment.
Installation Notes
Start only when the engine and exhaust system are fully cooled. Remove the existing DOC, inspect the adjacent piping, sensors, and seals for wear. Mount the new unit with fresh gaskets, torque all fasteners to Cummins specifications, and verify proper sealing. Once installed, clear any fault codes and perform a drive or regeneration cycle to confirm correct operation.
Final Thoughts
For ISX engines, this DOC provides the conversion strength, durability, and perfect fit you need to keep your emissions system operating cleanly and efficiently.