Built for Clean Power: Cummins ISX DOC (2014–2017)
What is it?
The Cummins ISX Diesel Oxidation Catalyst (DOC) for 2014–2017 is a vital emissions component that converts carbon monoxide (CO) and unburned hydrocarbons (HC) into cleaner gases before they move through the rest of the exhaust system.
Why choose this DOC?
Designed for ISX engines produced between 2014 and 2017, this DOC ensures consistent oxidation efficiency while maintaining proper exhaust flow. The right fit helps safeguard downstream filters, prevent backpressure buildup, and minimize diagnostic faults caused by incorrect replacements.
Key Benefits
✅ Perfect match for Cummins ISX engines (2014–2017)
✅ Converts CO and HC into environmentally safer exhaust
✅ Enhances the effectiveness of downstream DPF or SCR systems
✅ Durable construction withstands extreme heat and long-term use
✅ Direct-fit design simplifies installation and alignment
Applications
Ideal for heavy-duty trucks, industrial equipment, and commercial fleets powered by Cummins ISX engines from 2014–2017. This DOC acts as the first oxidation stage in your emission control system.
Installation Notes
Allow the engine and exhaust system to cool before installation. Remove the old DOC, inspect nearby pipes, flanges, and sensors for damage, and install the new one with fresh gaskets. Torque all fasteners to Cummins specifications and verify tight sealing. After installation, clear any diagnostic codes and run a regeneration or drive cycle to ensure proper function.
Final Thoughts
This DOC delivers the perfect balance of strength, precision, and performance for ISX engines—keeping your emissions clean, your system reliable, and your truck road-ready.