The OTR Diesel Oxidation Catalyst is the perfect choice for those looking for a reliable and cost-effective solution to reduce emissions from diesel engines. This catalyst is designed to provide performance comparable to or better than OEM parts without the additional cost of core charges. It features quality, innovation and durability, providing reliable performance. With this product, you can rest assured that your diesel engine will be running clean and efficient. FleetPride is your First Click in Heavy Duty®.