Paccar PX6 DOC

Precision After-Treatment Module: PACCAR PX6 DOC

What is it?
The PACCAR PX6 DOC (Diesel Oxidation Catalyst) is a key emissions-management component designed for vehicles equipped with the PACCAR PX6 engine series. Its primary function is to oxidize hydrocarbons (HC) and carbon monoxide (CO) in the exhaust stream, converting them into less harmful compounds and preparing the gas flow for downstream after-treatment components.

Why Choose the PACCAR PX6 DOC?
This DOC is built to align with the original equipment design for the PX6 engine line—its mounting configuration, exhaust flow path, and sensor interfaces match factory standards. Choosing a DOC that fits precisely helps ensure effective oxidation, avoids excess back-pressure, and supports the long-term reliability of the exhaust system.

Key Benefits
✅ Fits factory mounting and sensor port geometry for smooth installation
✅ Built for high-temperature, heavy-duty operations
✅ Efficiently converts HC and CO to cleaner exhaust output
✅ Helps maintain stable after-treatment systems and reduce fault codes
✅ Supports longevity of downstream filters, catalysts, and sensory components

Applications
The PACCAR PX6 DOC is applicable for medium-duty to heavy-duty vehicles powered by the PX6 engine. It’s designed for scenarios where emissions control must be dependable and operational efficiency is a priority.

Installation Notes
Professional installation is advised. Begin by confirming compatibility with your engine and emission system configuration. Remove the existing DOC, inspect all flange and sensor connections, clean surfaces of soot or residue, and replace gaskets or seals as needed. Carefully mount the new DOC using correct orientation and torque specifications. Reconnect any sensors and wiring, clear any existing fault codes, then perform a system check to verify stable exhaust temperature, flow and absence of leaks or abnormal readings.

Final Thoughts
A properly matched DOC is essential for efficient exhaust treatment and long-term system reliability. The PACCAR PX6 DOC delivers an engineered solution built for the demands of modern diesel engines, helping keep your vehicle compliant, robust and ready for operation.