Smarter Emission Flow: Cummins ISX DOC (2011–2013)
What is it?
The Cummins ISX Diesel Oxidation Catalyst (DOC) for 2011–2013 engines is a key component that converts harmful gases such as carbon monoxide (CO) and unburned hydrocarbons (HC) into cleaner emissions before they continue through the rest of the exhaust system.
Why choose this DOC?
Purpose-built for Cummins ISX engines produced between 2011 and 2013, this DOC provides excellent oxidation performance while maintaining proper exhaust flow. Using the correct replacement helps prevent excess backpressure, protects downstream filters, and minimizes system errors from poorly fitted parts.
Key Benefits
✅ Designed for Cummins ISX engines (2011–2013)
✅ Converts CO and hydrocarbons into cleaner exhaust gases
✅ Enhances performance of DPF and SCR systems
✅ Built to endure high thermal stress and long-term operation
✅ Direct-fit installation for fast and reliable setup
Applications
Ideal for heavy-duty trucks, industrial machinery, and commercial vehicles powered by Cummins ISX engines from 2011 to 2013. This DOC acts as the first catalytic stage in your emission control system, setting the foundation for cleaner and more efficient operation.
Installation Notes
Ensure the engine and exhaust system are fully cooled before starting. Remove the old DOC, inspect surrounding pipes, flanges, and sensors for wear, and install the new unit with fresh gaskets. Torque all fasteners to Cummins specifications and verify proper sealing. After installation, clear any diagnostic codes and perform a drive or regeneration cycle to confirm proper function.
Final Thoughts
Built for performance and durability, this DOC keeps your ISX engine compliant, efficient, and ready for the road—mile after mile.