Keeping you Ready for the Road Ahead , the Dorman Diesel Particulate Filter Gasket serves as a direct replacement for when the DPF is failed or damaged, aiding in preventing exhaust leaks. Designed to provide a secure seal between the diesel particulate filter and the exhaust system, this gasket ensures that your vehicle runs smoothly and efficiently. It is heat and corrosion resistant providing the durability you need to ensure your rig is running at its best. FleetPride is your First Click in Heavy Duty .