Cleaner Combustion Starts Here: Cummins ISX DOC (2014–2017)
What is it?
The Cummins ISX Diesel Oxidation Catalyst (DOC) for 2014–2017 is an essential emissions component that transforms harmful gases like carbon monoxide (CO) and unburned hydrocarbons (HC) into cleaner outputs before they pass through downstream systems.
Why choose this DOC?
Designed exclusively for ISX engines manufactured between 2014 and 2017, this DOC ensures effective oxidation while maintaining smooth exhaust flow. Selecting the proper unit protects downstream systems, minimizes backpressure, and prevents fault codes associated with improper replacements.
Key Benefits
✅ Compatible with Cummins ISX engines (2014–2017)
✅ Converts CO and hydrocarbons into cleaner exhaust gases
✅ Improves efficiency of downstream DPF or SCR systems
✅ Built to withstand high heat and continuous heavy-duty use
✅ Direct-fit design for accurate and easy installation
Applications
Perfect for heavy-duty trucks, vocational vehicles, and industrial machines equipped with Cummins ISX engines from 2014–2017. This DOC functions as the first catalytic stage in your vehicle’s emission control system.
Installation Notes
Ensure the engine and exhaust system are fully cooled before installation. Remove the old DOC, inspect nearby pipes, flanges, and sensors for damage, and install the new unit with fresh gaskets. Torque bolts to Cummins specifications, check sealing, and clear any diagnostic codes. Perform a short drive or regeneration cycle afterward to confirm proper function.
Final Thoughts
For your ISX engine, this DOC delivers dependable catalytic conversion, lasting durability, and a precise fit—keeping your emissions system efficient, compliant, and ready for the long haul.