The OTR Diesel Oxidation Catalyst is the perfect solution for those looking for a high-performance, cost-effective solution for their diesel engine. This catalyst is designed to provide performance comparable to or better than OEM parts without the additional cost of core charges. It is made with quality, innovation and durability in mind and can be used in a wide range of applications. With this product, you can rest assured that your diesel engine will be running at its peak performance. FleetPride is your First Click in Heavy Duty®.