Restore Emissions Efficiency with Mack MP7 MP8 MP10 DOC
What is it?
The Diesel Oxidation Catalyst (DOC) for the Mack MP7, MP8, and MP10 engines is a key emissions-control component. It oxidizes hydrocarbons (HC) and carbon monoxide (CO) in exhaust gases, preparing the emissions stream for downstream components and supporting cleaner operation.
Why choose this DOC?
Built for the Mack MP7, MP8, and MP10 engine families, this DOC offers precise fit and reliable performance. A worn or clogged catalyst can cause higher exhaust back-pressure, inefficient regeneration, or emissions fault codes. A correct replacement helps your system operate as intended.
Key Benefits
✅ Converts HC and CO into safer exhaust output
✅ Protects DPF, SCR and other downstream emissions components
✅ Helps lower exhaust restriction and maintain flow
✅ Direct-fit design—no modifications required
✅ Built to withstand heavy-duty conditions and high exhaust temperatures
Applications
Ideal for heavy-duty trucks and equipment powered by Mack MP7, MP8, or MP10 engines, particularly in vocational and commercial environments where emissions control and system reliability are essential.
Installation Notes
Allow the exhaust system to cool fully before servicing. Inspect the DOC housing, mounting points, and exhaust connections for wear, soot or damage. Replace gaskets and clamps during installation to secure a reliable seal. After fitting the new DOC, clear fault codes and verify system performance through diagnostics and check exhaust behavior under load.
Final Thoughts
If your Mack engine is experiencing after-treatment faults, elevated back-pressure, or restricted exhaust flow, this DOC is the solution to implement. With proper fitment and heavy-duty construction, it helps keep your system functioning cleanly, efficiently, and reliably.