Navistar MaxxForce 11,13 DOC

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Strong Emission Control Support: Navistar MaxxForce 11, MaxxForce 13 DOC

What is it?
The Navistar MaxxForce 11,13 Diesel Oxidation Catalyst (DOC) is an essential part of the emissions system for MaxxForce 11 and 13 engines. It helps convert hydrocarbons (HC) and carbon monoxide (CO) into less harmful compounds, preparing the exhaust stream for efficient processing by downstream components like the DPF and SCR.

Why Choose the Navistar MaxxForce 11,13 DOC?
This DOC is built to match the original design requirements for MaxxForce 11 and 13 engines. Its structure supports proper exhaust flow, correct sensor alignment, and reliable oxidation performance. Using the correct DOC helps reduce back-pressure issues, prevents system faults, and supports stable after-treatment operation.

Key Benefits
✅ Direct-Fit Replacement: Matches factory mounting points and exhaust geometry for easy installation.
✅ Durable Construction: Designed to withstand high heat, heavy vibration, and frequent operational cycling.
✅ Efficient Emission Conversion: Reduces HC and CO levels before exhaust reaches the DPF or SCR.
✅ Improved System Stability: Helps limit emissions-related trouble codes and reduces maintenance interruptions.
✅ Protection for Downstream Parts: Supports longer life for DPF, SCR catalysts, and sensors.

Applications
This DOC is intended for trucks and vocational vehicles powered by Navistar MaxxForce 11 or MaxxForce 13 engines. It suits regional haul, Class 8, fleet, and other heavy-duty applications where dependable emissions performance is essential.

Installation Notes
Have a qualified technician confirm engine compatibility before installation. Carefully remove the existing DOC and inspect all clamps, flanges, and sensors. Clean mating surfaces thoroughly and replace any worn gaskets or hardware. Install the new DOC using proper torque settings, reconnect sensors, and clear any stored codes. After installation, run the engine and confirm stable exhaust temperatures and system readings.

Final Thoughts
The Navistar MaxxForce 11,13 DOC provides a dependable, properly designed solution to maintain clean exhaust flow and long-term after-treatment reliability. It supports emissions compliance, protects downstream components, and helps keep your truck performing consistently in demanding environments.