Paccar PX6 DOC

Efficient Emissions Processing: PACCAR PX6 DOC

What is it?
The PACCAR PX6 Diesel Oxidation Catalyst (DOC) is a core component of the exhaust after-treatment system for PX6 engine platforms. Its role is to oxidize hydrocarbons (HC) and carbon monoxide (CO) in the exhaust stream, enabling cleaner emissions and helping maintain the health and function of downstream components like DPFs and SCR systems.

Why Choose the PACCAR PX6 DOC?
This DOC is specifically designed for the PX6 engine series and built to match OEM specifications—ensuring proper flow chambers, correct mounting geometry, and accurate sensor port alignment. Selecting the correct DOC helps maintain proper exhaust characteristics, minimizes back-pressure issues, supports DPF regeneration cycles, and prevents unnecessary emission-system fault codes. 

Key Benefits
✅ Built to OEM specification for PX6 engines, enabling accurate fit and integration.
✅ Durable construction designed to withstand high heat, heavy soot loads and long duty-cycles.
✅ Effective oxidation of HC and CO, supporting compliance with emissions standards.
✅ Improves exhaust flow conditions, helping protect the DPF and SCR units.
✅ Reduces risk of after-treatment system faults and downtime caused by mismatched components.

Applications
This DOC is suited for medium-duty and heavy-duty vehicles powered by PACCAR PX6 engines, especially in applications where emissions control reliability, durability and uptime are essential.

Installation Notes
Ensure engine compatibility before installation. Remove the existing DOC, inspect and clean all mating surfaces, replace gaskets or seals as needed, and install the new unit with correct orientation and torque specifications. After installation, clear any diagnostic trouble codes and monitor exhaust temperature, back-pressure and system warning indicators to verify correct function.

Final Thoughts
Choosing the correct DOC for your engine is essential for efficient after-treatment operation. The PACCAR PX6 DOC offers a factory-matched solution that supports emissions performance, system longevity and operational uptime.