Paccar PX6 DOC

Improve Exhaust Efficiency with Paccar PX6 DOC

What is it?
The Diesel Oxidation Catalyst (DOC) for the Paccar PX6 engine is a critical emissions-control component. It converts hydrocarbons (HC) and carbon monoxide (CO) from the exhaust stream into cleaner, less harmful gases, helping your aftertreatment system function smoothly and efficiently.

Why choose this DOC?
Engineered specifically for the Paccar PX6, this DOC provides proper fitment and dependable emissions performance. A worn or clogged catalyst can cause increased back-pressure, frequent regeneration activity, or emissions-related fault codes. Installing the correct DOC ensures clean exhaust flow and stable system operation.

Key Benefits
✅ Converts HC and CO into cleaner exhaust output
✅ Supports the performance of downstream DPF and SCR components
✅ Helps maintain optimal exhaust flow and reduce restriction
✅ Direct-fit design—no modifications required
✅ Built for high-temperature, heavy-duty operating environments

Applications
Perfect for medium-duty trucks and equipment powered by the Paccar PX6 engine, especially in applications where emissions compliance and reliable operation are essential.

Installation Notes
Let the exhaust system cool completely before servicing. Inspect the DOC housing and surrounding components for buildup or damage. Use new clamps, gaskets, and seals during installation. After installation, clear any emissions codes and verify proper exhaust system behavior through diagnostics.

Final Thoughts
If your PX6 engine is experiencing increased back-pressure, emissions warnings, or inefficient aftertreatment performance, replacing the DOC is an effective way to bring your exhaust system back to clean, consistent operation.