International Navistar DOC : OEM 5011044R1

Emissions Reliability for International/Navistar Diesel Engines

What Is It?

The Diesel Oxidation Catalyst (DOC) OEM 5011044R1 is a direct-fit component designed for use in International/Navistar diesel engines. Installed upstream in the emissions system, this DOC helps reduce harmful gases—such as hydrocarbons (HC) and carbon monoxide (CO)—by converting them into less harmful compounds through catalytic oxidation.

Why Choose OEM 5011044R1?

Built to Navistar’s OEM specifications, this DOC ensures seamless fitment, dependable oxidation capability, and proper integration with factory-installed exhaust and emissions systems. It helps maintain optimal exhaust conditions for downstream components like the DPF, supporting clean emissions and uninterrupted operation.

Key Benefits

✅ OEM-Specific Fitment: Designed for exact compatibility with International/Navistar diesel systems
✅ Reduces Emissions: Converts HC and CO into water vapor and carbon dioxide
✅ Supports Downstream Efficiency: Helps maintain exhaust temperature needed for DPF function
✅ Durable Construction: Built to endure harsh thermal cycles and long-haul conditions
✅ Sensor Port Ready: Fully compatible with OEM temperature and pressure sensors

Applications

This DOC is used in a range of International/Navistar trucks, buses, and vocational vehicles equipped with OEM emissions systems. It’s ideal for fleet operators needing consistent emissions control and dependable system working conditions in regulated driving environments.

Installation Notes

Installation should be handled by a certified technician. Inspect and clean all mating surfaces, clamps, and sensor connections. After installation, reset DOC-related ECM parameters using diagnostic tools and verify that the system is regen-ready. Perform a forced regeneration if necessary.

Final Thoughts

The OEM 5011044R1 DOC is a vital solution for maintaining emissions system health and compliance in International/Navistar diesel vehicles. With its reliable OEM-grade construction and precision fit, it supports cleaner operation and long-term durability across demanding fleet applications.