Boost Emissions System Quality with Cummins X12 X15 DOC
What is it?
The Diesel Oxidation Catalyst (DOC) for the Cummins X12 and X15 engine series is a vital emissions control component. It oxidizes hydrocarbons (HC) and carbon monoxide (CO) in the exhaust, preparing your system for downstream aftertreatment and helping maintain engine efficiency.
Why choose this DOC?
Designed for precise compatibility with Cummins X12 and X15 engines, this DOC ensures correct performance under demanding conditions. A compromised catalyst can lead to elevated back-pressure, frequent regeneration, or emissions fault codes. Installing the right DOC helps maintain system balance and reliable operation.
Key Benefits
✅ Converts harmful exhaust gases into safer output
✅ Protects the DPF, SCR, and other downstream components
✅ Helps reduce exhaust restriction and back-pressure
✅ Direct-fit design—no modifications needed
✅ Built for heavy-duty use with high temperature resilience
Applications
Ideal for heavy-duty trucks and equipment powered by Cummins X12 or X15 engines, especially where emissions compliance, reliability, and system longevity are required.
Installation Notes
Ensure the exhaust system has cooled before service. Inspect the DOC housing and exhaust connections for damage or deposits. Replace any worn seals, clamps or gaskets. After installation, clear fault codes and test for normal system behavior and exhaust flow.
Final Thoughts
If your vehicles experience emissions faults, increased resistor readings, or decreased system performance, a correct-fit DOC is key. With the right part, you’ll maintain clean emissions operations and keep your equipment running with confidence.