Clean-Air Catalyst: Paccar MX13 DOC (2018–2022)
What is it?
The Paccar MX13 DOC (Diesel Oxidation Catalyst) for model years 2018–2022 is a key aftertreatment component that chemically converts harmful exhaust gases—like carbon monoxide and hydrocarbons—into less harmful substances before they proceed to further filtering. It plays a vital role in preparing exhaust flow for downstream systems.
Why choose this DOC?
Engineered specifically for MX13 engines in the 2018–2022 range, this DOC balances effective oxidation with minimal backpressure. Using a correctly matched DOC helps prevent downstream system stress, reduces the chance of emissions penalties, and supports long-term equipment reliability.
Key Benefits
✅ Designed for Paccar MX13 engines (2018–2022)
✅ Converts carbon monoxide and unburned hydrocarbons efficiently
✅ Prepares exhaust gasses for SCR/DPF stages
✅ Built to endure high heat and harsh operating conditions
✅ Direct-fit installation for seamless integration into your system
Applications
This DOC is ideal for heavy trucks, buses, and industrial vehicles powered by Paccar MX13 engines from 2018 to 2022. Wherever emission standards and exhaust quality matter, this component supports clean, regulated exhaust flow.
Installation Notes
Before starting, ensure both engine and exhaust are completely cooled. Remove the existing DOC and inspect adjacent piping, flanges, and seals for wear or damage. Install the new DOC, applying fresh gaskets, and torque fasteners to Paccar specifications. After installation, inspect for leaks and verify system diagnostics and exhaust behavior under operation.
Final Thoughts
For your Paccar MX13 engine, the matching DOC provides the right combination of durability, correct chemistry, and fit you need to support your emissions system. It helps ensure your downstream exhaust components work efficiently and reliably.