Paccar PX9 DOC 2014-2017

Durable Emissions Support for the Long Haul: Paccar PX9 DOC (2014–2017)

What is it?
The Paccar PX9 DOC (2014–2017) is a Diesel Oxidation Catalyst built for the PX9 engine in Paccar trucks from model years 2014 to 2017. Its primary function is to oxidize unburned hydrocarbons (HC) and carbon monoxide (CO) in exhaust gases, converting them into cleaner compounds before they exit the system.

Why Choose the Paccar PX9 DOC (2014–2017)?
This DOC is engineered to match the original exhaust configuration of the PX9 engine, including sensor port locations, gas flow dynamics, and mounting geometry. Using a component aligned with OEM specifications helps reduce fitment challenges, support system harmony, and maintain dependable exhaust chemistry over time.

Key Benefits
✅ OEM-Aligned Fitment: Designed to match factory mounting points and exhaust pathways
✅ Sturdy Construction: Built to resist high heat, vibration, and harsh exhaust conditions
✅ Cleaner Emission Output: Helps convert HC and CO into less harmful byproducts
✅ Stable Operation: Reduces risk of emission-related alerts and supports consistent exhaust behavior
✅ Protects Downstream Components: Cleaner exhaust entering filters, sensors, and piping extends their life

Applications
This DOC is suited for Paccar trucks and heavy-duty vehicles equipped with the PX9 engine from 2014 to 2017. It’s ideal in long-haul, regional, and vocational settings where emissions reliability and system integrity are essential.

Installation Notes
Though designed as a direct-fit replacement, professional installation is strongly recommended. Proper gasket seating, clamp tightening, and sensor connection integrity are critical to avoid leaks or misalignment. After installation, clear diagnostic trouble codes and confirm that the engine control system recognizes the new component.

Final Thoughts
Maintaining emission compliance and system reliability requires quality parts. The Paccar PX9 DOC (2014–2017) offers a precision-built, OEM-compatible solution designed to restore proper oxidation in your exhaust system and support dependable operation over the long run.