The OTR 15.5" Diesel Particulate Filter is designed to provide superior filtration and performance. This filter is constructed from high-grade stainless steel and designed for maximum durability and corrosion resistance. Engineered flanges guard against leakage, while the filter is approved for horizontal, vertical or dual installations. This filter is designed to reduce emissions and improve engine performance, making it an ideal choice for diesel engines. FleetPride is your First Click in Heavy Duty®.