Exhaust Oxidation Solution: Paccar MX11 / MX13 DOC (2014–2017)
What is it?
The Paccar MX11, MX13 DOC (Diesel Oxidation Catalyst) for 2014–2017 engines is part of the emission aftertreatment system. It converts harmful gases like carbon monoxide (CO) and unburned hydrocarbons (HC) into less harmful compounds before the exhaust is further processed downstream.
Why choose this DOC?
This DOC is matched to Paccar MX11 and MX13 engine specifications for 2014–2017, ensuring the right chemical conversion and flow dynamics. A correct selector avoids excessive backpressure, improves downstream system function, and helps maintain proper emission operation.
Key Benefits
✅ Designed to fit MX11 / MX13 engines (2014–2017)
✅ Oxidizes CO and hydrocarbons into safer exhaust byproducts
✅ Supports downstream aftertreatment components
✅ Durable construction resists heat, corrosion, and long service
✅ Direct-fit design ensures correct alignment and installation
Applications
Use this DOC in medium- and heavy-duty trucks, commercial vehicles, and industrial machines powered by MX11 or MX13 engines built from 2014 through 2017. It serves as the initial catalytic stage before DPF or SCR systems.
Installation Notes
Allow the engine and exhaust to cool completely. Remove the existing DOC and inspect surrounding pipes, flanges, sensors, and seals for wear or damage. Mount the new DOC with fresh gaskets, torque hardware to Paccar specifications, and confirm sealing. After installation, monitor exhaust diagnostics and behavior to verify proper system operation.
Final Thoughts
When your Paccar MX11 or MX13 engine requires effective exhaust conversion, this DOC delivers the durability, correct chemistry, and fit needed to support downstream emissions.