Mack MP7, MP8, MP10 DOC

Clean-Flow Exhaust Protection for Mack MP7 / MP8 / MP10 Engines

What is it?
The Diesel Oxidation Catalyst (DOC) for Mack MP7, MP8 and MP10 engines is an emissions-control component that converts hydrocarbons (HC) and carbon monoxide (CO) in the exhaust stream into cleaner, less-harmful gases, thereby helping the after-treatment system maintain consistent and reliable operation.

Why choose this DOC?
Tailored specifically for the MP engine family, this DOC matches the original equipment layout, offering correct flow dynamics and sensor-port alignment. A worn or restricted catalyst can cause unwanted exhaust resistance, frequent regeneration events or emissions-related fault codes—installing the correct DOC supports cleaner exhaust flow and dependable system behavior.

Key Benefits
✅ Converts HC and CO into cleaner exhaust output
✅ Maintains proper exhaust gas flow for downstream after-treatment components
✅ Helps minimize exhaust restriction and support stable operation
✅ Direct-fit design—no modifications required
✅ Built for heavy-duty, high-temperature, demanding environments

Applications
Designed for heavy-duty trucks and commercial vehicles powered by the Mack MP7, MP8 or MP10 engine families—particularly in applications where emissions compliance and consistent after-treatment system behaviour are essential.

Installation Notes
Allow the exhaust and after-treatment system to cool fully before servicing. Remove the existing DOC, inspect the housing and adjoining piping for soot buildup, damage or leaks. Install the replacement using new clamps, gaskets and seals. After installation, clear any emissions-system fault codes and verify correct exhaust system behaviour through diagnostics.

Final Thoughts
If your MP-series engine is showing signs of increased exhaust resistance, regeneration issues or inconsistent after-treatment function, replacing the DOC with a properly matched unit is a practical step to restore clean, reliable exhaust flow. This component plays a critical role in supporting the integrity of the full emissions-control system and maintaining dependable operation.