Product Details: The OTR Diesel Particulate Filter is the perfect solution for reducing emissions from diesel engines. This advanced engine catalyst is constructed from high grade stainless steel for superior durability and corrosion resistance. Engineered flanges guard against leakage and the filter is approved for horizontal, vertical, or dual installations. This filter is designed to reduce particulate matter and other pollutants from diesel exhaust, helping to improve air quality and reduce environmental impact. FleetPride is your First Click in Heavy Duty®.