Power Emissions Forward with PACCAR MX11 MX13 DOC 2014–2017
What is it?
The Diesel Oxidation Catalyst (DOC) for the PACCAR MX11 and MX13 engines (model years 2014–2017) is a key component in the aftertreatment system. It oxidizes hydrocarbons (HC) and carbon monoxide (CO) from the exhaust stream, preparing cleaned gases for downstream systems and supporting long-term system health.
Why choose this DOC?
Designed for the MX11/MX13 engine series (2014–2017), this DOC ensures correct fitment, flow dynamics, and catalyst chemistry. A worn, clogged, or mismatched catalyst can cause elevated back-pressure, frequent regeneration events, reduced fuel efficiency, or emissions fault codes—this correct replacement helps your equipment work as intended.
Key Benefits
✅ Converts harmful exhaust gases into cleaner output
✅ Supports the downstream DPF and SCR systems for smoother operation
✅ Helps reduce back-pressure and keeps regeneration cycles in check
✅ Direct-fit design—no alterations required
✅ Built for heavy-duty temperatures, long duty-cycles, and robust industrial use
Applications
Ideal for long-haul trucks and fleet vehicles equipped with PACCAR MX11 or MX13 engines (years 2014–2017) where emissions compliance, efficiency, and uptime are essential.
Installation Notes
Ensure the exhaust system is completely cool before servicing any part. Inspect the DOC housing, clamps, and connections for soot deposits or damage. Replace the gaskets, seals, and clamps during installation to ensure a proper seal and correct alignment. Once installed, clear any emissions fault codes and monitor exhaust system behaviour and regeneration events to verify correct operation.
Final Thoughts
If your MX11 or MX13-equipped vehicle is facing issues such as increased exhaust resistance, frequent aftertreatment faults, or inconsistent regeneration, installing the correct DOC is the smart fix. With factory-match fitment and duty-ready design, this component helps keep your engine running clean, efficient, and reliably.