Cummins ISB 6.7 DOC 2014-2017
Exceptional Emissions Control for ISB 6.7 (2014–2017): OEM DOC
What is it?
The OEM Diesel Oxidation Catalyst (DOC) for Cummins ISB 6.7 engines (2014–2017) is an exhaust aftertreatment component that oxidizes hydrocarbons (HC) and carbon monoxide (CO), reducing harmful emissions before the exhaust reaches downstream systems.
Why choose this OEM DOC?
This DOC is manufactured to Cummins’ factory specifications, ensuring correct exhaust flow dynamics, backpressure balance, and material durability. Choosing a genuine unit helps maintain compatibility with your engine’s emission systems and avoids issues like diagnostic faults, excessive backpressure, or premature failure that can come with aftermarket alternatives.
Key Benefits
✅ Proper drop-in fit for Cummins ISB 6.7 (2014–2017)
✅ Efficient oxidation of HC and CO in the exhaust
✅ Preserves optimal exhaust flow and system balance
✅ Built to withstand harsh thermal and exhaust conditions
✅ Fully compatible with OEM emission control logic and sensors
Applications
Used in medium-duty trucks, utility vehicles, and vocational equipment powered by ISB 6.7 engines within the 2014 through 2017 model years. Integral to compliance and effective operation of the full exhaust aftertreatment system.
Installation Notes
Have a skilled technician perform the installation. First, allow the exhaust system to cool completely. Remove the existing DOC and clean flange faces and mating surfaces. Replace any gaskets or seals as needed. Install the new DOC and torque all fasteners to Cummins’ specifications. After installation, inspect for leaks, verify correct exhaust flow, and clear any emission‑related fault codes via diagnostic tools.
Final Thoughts
If emissions warnings, backpressure anomalies, or exhaust inefficiencies are cropping up, replacing the DOC with this factory-spec unit is a smart step toward restoring durable, compliant emissions performance. It supports optimal function of downstream systems and helps keep your engine and fleet on the road.