Navistar MaxxForce 11,13 DOC

Streamlined Emissions Management: Navistar MaxxForce 11, MaxxForce 13 DOC

What is it?
The Navistar MaxxForce 11,13 Diesel Oxidation Catalyst (DOC) is a key component in the after-treatment system for MaxxForce 11 and 13 engines. It performs the chemical conversion of hydrocarbons (HC) and carbon monoxide (CO) in the exhaust stream into less harmful substances before the gases reach downstream components such as DPFs or SCR units.

Why Choose the Navistar MaxxForce 11,13 DOC?
Designed to match factory requirements for the MaxxForce 11 and 13 engines, this DOC ensures proper exhaust flow path, sensor integration, and mounting geometry. Using a correctly specified DOC maintains exhaust system balance, helps prevent elevated back-pressure, and reduces risk of emissions-related fault codes.

Key Benefits
✅ OEM-style fit and form: aligns with factory mounts and sensor ports for a proper installation.
✅ Built for heavy-duty use: handles continuous high temperatures, soot loads, and extended duty cycles.
✅ Efficient emissions conversion: supports cleaner exhaust by oxidizing HC and CO effectively.
✅ System stability: helps reduce the frequency of after-treatment faults and improves engine reliability.
✅ Downstream protection: by maintaining clean exhaust flow, it supports longer service life of sensors, DPF, and other systems.

Applications
This DOC is suitable for heavy-duty trucks and vocational equipment powered by Navistar MaxxForce 11 or MaxxForce 13 engines. It is especially beneficial for fleet vehicles, regional haul trucks, and vocational machines where emissions compliance and uptime are mission-critical.

Installation Notes
It is recommended that installation be performed by a trained technician. Begin by verifying the engine model and production year match the MaxxForce 11,13 series. Remove the existing DOC with care, inspecting the exhaust flange, sensors, and gaskets for wear or damage. Clean all mating surfaces thoroughly, install the new DOC using manufacturer torque specifications, and replace any seals or clamps as needed. After installation, reconnect all sensors, clear diagnostic codes, and perform a system check. Monitor exhaust temperatures, back-pressure, and sensor signals to ensure proper function.

Final Thoughts
For operators seeking reliable emissions control componentry, the Navistar MaxxForce 11,13 DOC offers a factory-matched solution that supports compliance, system health, and equipment longevity. Its robust design and precision fit help keep your engine’s after-treatment system performing at its best.