The OTR 6BT5.9 Series Water Pump is designed to provide reliable and efficient cooling for your engine. This pump is made from high-quality materials to ensure durability and longevity, and is built to withstand the toughest fleet guidelines. It features a carefully balanced impeller and computer-tooled components to ensure an OE fit and function. This pump is designed to provide maximum cooling performance and is ideal for a variety of applications. FleetPride is your First Click in Heavy Duty®.