International Navistar DOC : OEM 2594146C91

Emissions System Consistency for International/Navistar Engines

What Is It?

The Diesel Oxidation Catalyst (DOC) OEM 2594146C91 is a direct-fit replacement component engineered for use in International/Navistar diesel-powered vehicles. This part is responsible for oxidizing hydrocarbons (HC) and carbon monoxide (CO) in the exhaust stream, reducing harmful emissions before they reach downstream components like the diesel particulate filter (DPF).

Why Choose OEM 2594146C91?

Manufactured to meet original equipment standards, this DOC ensures precise fitment, thermal reliability, and seamless integration with the vehicle’s emissions system. It contributes to the efficiency and function of the entire aftertreatment assembly by optimizing the exhaust chemistry required for successful DPF regeneration.

Key Benefits

✅ OEM-Specific Fit: Built for exact compatibility with International/Navistar diesel systems
✅ Reduces Harmful Emissions: Oxidizes CO and HC into less harmful gases
✅ Supports DPF Operation: Helps sustain exhaust temperature and flow characteristics
✅ Durable Construction: Designed to endure repeated thermal cycles and high-demand usage
✅ Sensor-Compatible Ports: Accepts OEM pressure and temperature sensors

Applications

This DOC is commonly found in medium- and heavy-duty trucks, buses, and vocational vehicles manufactured by International/Navistar. It is well-suited for fleets operating in regions with stringent emissions standards where system reliability is a top priority.

Installation Notes

Installation should be performed by a qualified technician. Check all clamps, gaskets, and sensor ports before installation. Once installed, reset the ECM using diagnostic tools and confirm system readiness. A manual regeneration may be required post-install.

Final Thoughts

The OEM 2594146C91 DOC is a reliable and precise replacement designed to restore emissions working conditions in International/Navistar diesel applications. Its OEM-quality build ensures your emissions system functions properly, helping you stay compliant and on the road.