International Navistar MaxxForce 13 DOC Filter 2011-2014: OEM 5010811R91

Restore Exhaust Efficiency with International Navistar MaxxForce 13 DOC Filter 2011–2014 OEM 5010811R91

What is it?
The DOC Filter (OEM 5010811R91) for the International Navistar MaxxForce 13 engine is a vital emissions-control component. It oxidizes hydrocarbons (HC) and carbon monoxide (CO) in the exhaust stream, helping reduce harmful emissions and supporting proper after-treatment system operation.

Why choose this DOC Filter?
Engineered specifically for MaxxForce 13 engines from 2011–2014, this OEM DOC filter delivers the correct fit and reliable performance. A failing or restricted catalyst can lead to higher exhaust back-pressure, frequent fault codes, or unstable regeneration behavior. Replacing it with the proper unit helps bring the exhaust system back into balance.

Key Benefits
✅ Converts HC and CO into cleaner exhaust output
✅ Supports downstream after-treatment components
✅ Helps reduce exhaust restriction and back-pressure
✅ Direct-fit design with no modifications required
✅ Built for heavy-duty service and high-temperature operation

Applications
Ideal for on-highway trucks and vocational equipment powered by International Navistar MaxxForce 13 engines (2011–2014) where emissions compliance and system reliability are essential.

Installation Notes
Allow the exhaust system to cool fully before installation. Inspect the DOC housing, exhaust joints, clamps, and seals for soot buildup or damage. Replace gaskets and clamps as needed to ensure a secure, leak-free fit. After installation, clear any diagnostic fault codes and verify exhaust system behavior through diagnostics.

Final Thoughts
If your MaxxForce 13 engine is experiencing emissions system alerts, elevated back-pressure, or restricted exhaust flow, installing the OEM 5010811R91 DOC Filter is the correct solution. With precise fitment and durable construction, it helps your engine operate cleaner, smoother, and more reliably.