Cummins ISB 6.7 DOC 2014-2017
Emissions Compliance Restored – Cummins ISB 6.7 DOC (2014‑2017)
What is it?
The DOC (Diesel Oxidation Catalyst) for Cummins ISB 6.7L engines from 2014 to 2017 is an exhaust aftertreatment device that oxidizes hydrocarbons (HC) and carbon monoxide (CO) before the exhaust stream proceeds to downstream components.
Why choose this OEM DOC?
This DOC is manufactured to Cummins’ original specifications, ensuring proper exhaust gas flow, optimal backpressure, and durable construction. Genuine units maintain compatibility with engine management and emission systems, reducing the risk of diagnostic faults, poor performance, or early failure associated with generic or low-quality replacements.
Key Benefits
✅ Drop‑in compatibility with ISB 6.7 engines (2014‑2017)
✅ Efficient removal of HC and CO from exhaust
✅ Maintains correct exhaust flow characteristics
✅ Built to endure high-temperature and corrosive exhaust environments
✅ Seamless integration with factory emissions control systems
Applications
This DOC is used in medium-duty trucks, utility vehicles, and vocational equipment powered by Cummins ISB 6.7L engines built between 2014 and 2017. It is a key component for ensuring emissions compliance and protecting downstream emission components.
Installation Notes
Installation should be done by a qualified technician. Ensure the exhaust system is fully cooled before removal. Remove the existing DOC and thoroughly clean the mating surfaces. Inspect and replace gaskets or seals as needed. Install the new DOC, torquing fasteners to Cummins’ specifications. After installation, check for leaks, confirm proper exhaust flow, and clear any emission system fault codes via diagnostics.
Final Thoughts
If your ISB 6.7 engine is showing emissions warnings or performance degradation, replacing the DOC with this factory-spec component helps restore clean exhaust operation and system integrity. It supports the proper function of the entire emission control chain and helps keep your engine compliant and reliable.