Cummins ISC DOC 2008-2010

Clean Emissions for ISC Series – Cummins ISC DOC (2008–2010)

What is it?
The Diesel Oxidation Catalyst (DOC) for Cummins ISC engines manufactured from 2008 to 2010 is an emissions control device that oxidizes hydrocarbons (HC) and carbon monoxide (CO) in the exhaust before those gases reach downstream treatment systems. It helps reduce harmful pollutants and supports the engine’s overall emissions strategy.

Why choose this OEM DOC?
This DOC is built to Cummins’ original engineering specifications—ensuring proper exhaust gas flow, backpressure balance, and material durability. A genuine DOC helps avoid diagnostic faults, flow restrictions, or performance issues that often result from aftermarket or mismatched components.

Key Benefits
 ✅ Direct-fit replacement for Cummins ISC (2008–2010)
 ✅ Efficient oxidation of HC and CO in the exhaust stream
 ✅ Maintains correct exhaust flow and minimizes backpressure
 ✅ Durable construction designed for high-heat environments
 ✅ Compatible with factory emission control systems and sensors

Applications
Commonly used in medium-duty trucks and vocational vehicles powered by Cummins ISC engines from 2008 through 2010. The DOC is part of the emission aftertreatment system that ensures exhaust gases are cleaner before entering further catalytic or particulate control components.

Installation Notes
Installation should be performed by a qualified technician. Begin with a cooled exhaust system. Remove the existing DOC, then inspect and clean the mating flanges and surfaces for any build-up or damage. Replace worn gaskets or seals. Position and install the new unit, tightening fasteners to Cummins’ torque specifications. After installation, check for exhaust leaks, confirm exhaust flow is unobstructed, and clear any emissions system fault codes using diagnostic tools.

Final Thoughts
If your ISC engine is triggering emission warnings, showing increased exhaust smoke, or failing emission tests, installing the correct DOC for 2008–2010 is essential to restore proper exhaust oxidation and system integrity. With factory-level fit and specifications, it supports your engine’s emissions compliance and reliability.