Emission Conversion Module: Cummins ISX DOC (2008–2010)
What is it?
The Cummins ISX Diesel Oxidation Catalyst (DOC) for model years 2008–2010 is built to transform carbon monoxide (CO) and unburned hydrocarbons (HC) in the exhaust into less harmful gases, before the emissions stream advances to downstream treatment stages.
Why choose this DOC?
Designed expressly for ISX engines from 2008 to 2010, this DOC balances conversion performance with optimized flow. Choosing the correct unit helps prevent backpressure issues, protects downstream systems, and reduces the risk of fault codes that may arise from mismatched or inferior parts.
Key Benefits
✅ Tailored for Cummins ISX engines (2008–2010)
✅ Converts CO and hydrocarbons into cleaner emissions
✅ Supports downstream DPF or SCR systems
✅ Built to endure high temperatures and extended use
✅ Direct-fit design for precise and reliable installation
Applications
This DOC is ideal for heavy trucks, vocational rigs, or equipment powered by Cummins ISX engines built between 2008 and 2010. It serves as the first catalytic step in the exhaust emissions path.
Installation Notes
Begin with a fully cooled engine and exhaust. Remove the existing DOC and inspect adjacent pipes, flanges, sensors, and seals for wear or damage. Install the replacement unit using fresh gaskets, torque fasteners to Cummins specifications, and confirm sealing integrity. After installation, clear any fault codes and run a drive or regeneration cycle to verify proper operation.
Final Thoughts
For ISX engines of the 2008–2010 era, this DOC delivers dependable conversion, durability, and compatibility—helping maintain cleaner emissions and protect your entire aftertreatment system.