Efficient Exhaust Control: Cummins ISM,ISL DOC (2008–2010)
What is it?
The Cummins ISM,ISL DOC (Diesel Oxidation Catalyst) for 2008–2010 engines is an early stage exhaust treatment component that converts carbon monoxide (CO) and unburned hydrocarbons (HC) into less harmful gases. It lays the groundwork for cleaner emissions before further processing downstream.
Why choose this DOC?
Designed for ISM and ISL engines built between 2008 and 2010, this DOC ensures optimized chemical conversion while maintaining balanced exhaust flow. Selecting the correctly matched unit helps avoid issues like excessive backpressure, component stress, or error codes that often result from using mismatched or substandard parts.
Key Benefits
✅ Matched specifically for Cummins ISM / ISL (2008–2010)
✅ Converts CO and hydrocarbons to safer byproducts
✅ Protects downstream aftertreatment components
✅ Durable construction handles heat and extended use
✅ Direct-fit design ensures straightforward installation
Applications
This DOC is ideal for trucks, buses, generators, and industrial equipment powered by ISM or ISL engines from 2008 to 2010. It forms the first line of exhaust treatment before gases reach filters or catalytic stages.
Installation Notes
Shut down the engine and allow the exhaust system to cool completely. Remove the existing DOC and inspect surrounding pipes, flanges, and seals. Install the new unit with fresh gaskets, torque fasteners to factory specs, and ensure proper sealing. After installation, monitor exhaust diagnostics and performance to validate correct operation.
Final Thoughts
For ISM and ISL engines, this OEM DOC offers the right concentration of efficiency, durability, and compatibility to help maintain controlled exhaust chemistry and long-term system health.