Exhaust Cleanup Stage: Cummins ISM, ISL DOC (2008–2010)
What is it?
The Cummins ISM, ISL DOC (Diesel Oxidation Catalyst) for 2008–2010 helps convert harmful exhaust gases—such as carbon monoxide (CO) and unburned hydrocarbons (HC)—into safer byproducts before they reach downstream emission control components.
Why choose this DOC?
This DOC is calibrated to the exhaust flow and thermal characteristics of ISM and ISL engines from 2008 to 2010. A proper match ensures optimal oxidation performance without creating excessive backpressure. Using the correct unit helps preserve system balance and prevent faults tied to inferior or mismatched parts.
Key Benefits
✅ Specified for Cummins ISM / ISL engines (2008–2010)
✅ Converts CO and HC to less harmful gases
✅ Protects downstream emission components
✅ Engineered to resist high temperatures and ongoing use
✅ Direct-fit design for proper and efficient installation
Applications
Ideal for heavy trucks, vocational vehicles, and machinery powered by ISM or ISL engines manufactured between 2008 and 2010. It functions as the initial catalytic element before exhaust gases move on to DPF or SCR systems.
Installation Notes
Ensure the engine and exhaust system are fully cooled. Remove the old DOC and inspect adjacent piping, sensors, and seals. Install the replacement with new gaskets, tighten hardware according to Cummins specs, and confirm all seals. After installation, check system diagnostics and exhaust performance to verify proper operation.
Final Thoughts
For your ISM or ISL engine, this DOC serves as the proper oxidation step in your emission system. With correct design, fit, and durability, it supports cleaner exhaust flow and helps protect the rest of your aftertreatment components.