Exhaust Cleanup Core: Cummins ISM / ISL DOC (2008–2010)
What is it?
The Cummins ISM / ISL DOC (Diesel Oxidation Catalyst) for model years 2008–2010 helps convert carbon monoxide (CO) and unburned hydrocarbons (HC) in exhaust gases into less harmful compounds before they reach downstream aftertreatment devices. It’s an important early-stage filter in your emissions chain.
Why choose this DOC?
Engineered to match the exhaust characteristics and flow of ISM / ISL engines from 2008–2010, this DOC maintains efficient conversion without choking the system. Using a properly matched DOC helps prevent backpressure issues, protects downstream filters/catalysts, and avoids emission system errors tied to poor component matching.
Key Benefits
✅ Designed for Cummins ISM and ISL engines (2008–2010)
✅ Transforms CO and hydrocarbons into cleaner emissions
✅ Helps protect downstream systems and maintain flow
✅ Durable build tolerates exhaust heat and prolonged use
✅ Direct-fit design simplifies installation
Applications
This DOC is suitable for trucks, commercial vehicles, and industrial machines powered by ISM or ISL engines from 2008 to 2010. It supports the first stage of exhaust treatment before gases pass to DPF or SCR systems.
Installation Notes
Make sure the engine and exhaust system are fully cooled. Remove the old DOC and inspect adjoining piping, flanges, sensors, and seals. Install the replacement with new gaskets, torque bolts to Cummins specifications, and ensure proper sealing. After installation, monitor exhaust behavior and system diagnostics to confirm proper operation.
Final Thoughts
For dependable exhaust gas cleanup early in the emissions chain, this ISM / ISL DOC provides the right blend of performance, fit, and durability—helping sustain system health and avoid downstream issues.