Diesel engines depend on advanced emissions systems to reduce harmful exhaust pollutants, and the International Navistar MaxxForce 13 DOC Filter (2011–2014, OEM 5010813R91) plays a vital role in that process. The Diesel Oxidation Catalyst (DOC) filter helps convert carbon monoxide and unburned hydrocarbons into less harmful gases before they proceed through the rest of the exhaust system. Using the correct OEM-grade DOC filter ensures your engine’s aftertreatment components work efficiently together, supporting cleaner operation and dependable performance.
This DOC filter contributes significantly to effective emissions control — here’s why it matters:
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Improves Exhaust Quality – Helps transform carbon monoxide and hydrocarbons into safer exhaust gases, reducing the amount of pollutants released into the environment.
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Supports Downstream Emissions Components – By lowering pollutant load early in the exhaust stream, the DOC filter helps subsequent systems like particulate filters or SCR converters operate more effectively.
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Helps Maintain Emissions Compliance – Installing the correct DOC filter helps ensure your engine continues to meet regulatory emissions standards without triggering warning codes or derate conditions.
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OEM-Grade Fit and Durability – As OEM 5010813R91, this filter meets original specifications for size, materials, and performance, delivering reliable long-term operation.
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Prevents Exhaust System Issues – Replacing a worn or clogged DOC filter can help reduce backpressure, improve throttle response, and maintain smoother exhaust flow.
A worn or restricted DOC filter can lead to reduced emissions efficiency, higher exhaust temperatures, and potential system warnings. The International Navistar MaxxForce 13 DOC Filter (OEM 5010813R91) provides the OEM-standard quality and emissions support your engine depends on — helping keep your diesel running cleaner and more efficiently. For customers seeking a dependable replacement part, Tamerx offers high-quality components designed to support long-lasting emissions performance and reliable engine operation.












