Paccar PX6 DOC

Optimized After-Treatment: PACCAR PX6 DOC

What is it?
The PACCAR PX6 Diesel Oxidation Catalyst (DOC) is a key emissions-control module used on PACCAR PX6 engine platforms. Its role is to oxidize hydrocarbons (HC) and carbon monoxide (CO) in the exhaust before the gases proceed to downstream after-treatment stages, helping maintain cleaner emissions and better system performance.

Why Choose the PACCAR PX6 DOC?
This DOC is built to OEM standards for the PX6 engine family—ensuring correct mounting, exhaust flow path, and sensor integration. Using a component tailored to your engine’s specifications helps maintain proper exhaust dynamics, avoids excessive back-pressure, and supports consistent after-treatment operation.

Key Benefits
✅ Designed for direct fit with PX6 mounting and sensor interfaces.
✅ Heavy-duty construction engineered for high thermal and soot loads.
✅ Efficient oxidation of HC and CO, enhancing exhaust cleanliness.
✅ Improved stability in the after-treatment system, reducing fault risk.
✅ Supports longevity of downstream components like DPF and sensors.

Applications
Ideal for vehicles powered by PACCAR PX6 engines in heavy-duty or medium-duty duty cycles where emissions compliance and system reliability are required.

Installation Notes
Ensure engine compatibility with your PX6 configuration before installation. Remove the old DOC, inspect mating flanges, remove soot deposits and clean the area, then install the new unit with correct orientation and torque. Reconnect sensors, clear any diagnostics, and test exhaust system operation to confirm normal back-pressure and temperature behavior.

Final Thoughts
For reliable emissions control, the PACCAR PX6 DOC delivers an OEM-matched, durable solution that supports cleaner operation, better system longevity and consistent duty performance.