Paccar PX6 DOC

Your Go-To DOC Replacement for the Paccar PX6

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) in the exhaust stream into cleaner, less harmful gases, enabling the aftertreatment system to operate more reliably and consistently. 

Why choose this DOC?
Designed specifically for the PX6 engine (model years 2011-2013), this DOC provides correct fitment and dependable emissions handling. An over-worn or blocked catalyst may lead to higher exhaust restriction, frequent regeneration events, or emissions-related fault codes. Installing the correct DOC helps maintain clean exhaust flow and steady system operation. 

Key Benefits
✅ Converts HC and CO into cleaner exhaust output
✅ Supports downstream aftertreatment components
✅ Helps maintain steady exhaust flow and reduce restriction
✅ Direct-fit design with no modifications required
✅ Built for high-temperature, heavy-duty operating environments

Applications
Ideal for medium-duty trucks and equipment powered by the Paccar PX6 engine (2011-2013), especially in operations where emissions compliance and reliable system function are essential. 

Installation Notes
Before starting service, allow the exhaust system to cool completely. Inspect the DOC housing and adjacent pipes for buildup or damage. Replace any worn clamps, gaskets, or seals with new ones. After installation, clear any emissions codes and confirm proper exhaust system behaviour via diagnostics.

Final Thoughts
If your PX6-equipped machine is showing signs of elevated exhaust restriction, emissions warnings, or inconsistent aftertreatment system behavior, replacing the DOC is a practical route back to clean, reliable operation. This component supports dependable day-to-day system performance and keeps your equipment running with confidence.