Emission Conversion Core for Cummins ISX (2011–2013)
What is it?
The Cummins ISX Diesel Oxidation Catalyst (DOC) for 2011–2013 engines transforms carbon monoxide (CO) and unburned hydrocarbons (HC) into less harmful gases before they reach downstream aftertreatment systems.
Why choose this DOC?
Built to match the flow and thermal characteristics of ISX engines from 2011 to 2013, this DOC ensures efficient conversion without creating excessive backpressure. Choosing the right unit helps protect downstream filters or SCR, improves system reliability, and avoids fault codes linked to mismatched parts.
Key Benefits
✅ Compatible with Cummins ISX engines (2011–2013)
✅ Converts CO and HC into cleaner emissions
✅ Supports downstream DPF or SCR units
✅ Durable construction built for high exhaust temperatures
✅ Direct-fit design for smooth installation
Applications
Ideal for heavy trucks, vocational vehicles, and industrial machines using Cummins ISX engines manufactured between 2011 and 2013. It acts as the first catalytic step in your exhaust treatment sequence.
Installation Notes
Ensure the engine and exhaust system are fully cooled. Remove the existing DOC and inspect adjacent piping, sensors, and gaskets for wear. Install the new unit with fresh gaskets, torque all fasteners to Cummins specifications, and confirm proper sealing. After installation, clear diagnostic codes and run a drive or regeneration cycle to verify system functionality.
Final Thoughts
For your ISX engine, this DOC unit delivers reliable oxidation performance, correct fit, and durability — supporting cleaner emissions and protecting your downstream components.