DOCs & SCRs
OE-Grade Catalysts for EPA 10, EPA 17, and EPA 21 Systems
OE-Grade Catalysts for EPA 10, EPA 17, and EPA 21 Systems
Metallic or ceramic options, engineered to OE standards and tailored to deliver the best performance for your vehicle.
Comes with all needed clamps & gaskets, built for durability, and backed by a 3-year warranty.
Constantly innovating & improving catalytic properties, for a perfect balance between performance & price.
Choosing Dinex DOCs (Diesel Oxidation Catalysts) and SCRs (Selective Catalytic Reduction systems) is a decision that benefits both your bottom line and the environment. Our components are designed to meet strict EPA standards, delivering efficient emissions reduction while maintaining engine performance. By reducing harmful pollutants like NOx and particulate matter, Dinex systems help fleets operate more sustainably without sacrificing reliability.
Built with OE-grade materials and validated to the highest standards, Dinex DOCs and SCRs offer long-lasting performance—reducing the need for frequent replacements and minimizing costly downtime. Our advanced designs ensure optimal catalyst efficiency, helping you lower operational costs through better fuel economy and extended service intervals.
With Dinex, you're not just choosing replacement parts—you're choosing smarter solutions that keep your trucks compliant, your maintenance costs under control, and your environmental footprint smaller.
The Diesel Oxidation Catalyst (DOC) burns a wide range of pollutant gases in the exhaust stream and, in doing so, supports the Particulate Filter by helping it burn off trapped particles and soot.
A failed DOC can lead to significantly more frequent active regenerations. In many cases, the root cause is related to EGR coolant leaks or insufficient air supply within the system.
The Selective Catalytic Reduction (SCR) catalyst is where nitrogen oxides (NOx) react with DEF (Diesel Exhaust Fluid) and are reduced to harmless components. It is part of the complete SCR system, which also includes pumps, injectors, and sensors.
Unfavorable operating conditions or poor maintenance of the DEF system can damage the SCR substrate—often leading to the need for replacement.
