Pure Performance, Cleaner Output: Cummins ISX DOC (2014–2017)
What is it?
The Cummins ISX Diesel Oxidation Catalyst (DOC) for 2014–2017 is a key emissions component that transforms harmful gases such as carbon monoxide (CO) and unburned hydrocarbons (HC) into cleaner, safer exhaust before passing through downstream systems.
Why choose this DOC?
Specifically designed for ISX engines produced between 2014 and 2017, this DOC ensures efficient oxidation without restricting exhaust flow. It helps protect downstream components, reduces backpressure, and prevents system faults commonly caused by incorrect or inferior replacements.
Key Benefits
✅ Perfectly matched for Cummins ISX engines (2014–2017)
✅ Converts CO and hydrocarbons into cleaner emissions
✅ Enhances downstream DPF or SCR system performance
✅ Built to handle extreme temperatures and long service life
✅ Direct-fit installation for accuracy and ease
Applications
This DOC is ideal for heavy-duty trucks, commercial fleets, and industrial vehicles powered by Cummins ISX engines from 2014–2017. It acts as the first catalytic stage in your vehicle’s exhaust aftertreatment process, ensuring smooth operation and compliance with emissions standards.
Installation Notes
Work only on a fully cooled engine and exhaust system. Remove the existing DOC, inspect all connected pipes, flanges, and sensors, and replace any damaged parts. Install the new DOC using fresh gaskets, torque bolts to Cummins specifications, and check for a proper seal. After installation, clear any diagnostic codes and perform a regeneration or drive cycle to confirm correct function.
Final Thoughts
For ISX engines, this DOC delivers dependable catalytic conversion, exceptional durability, and precise fitment—helping you achieve cleaner emissions and sustained performance mile after mile.