Equip your semi with essential parts with Expertise Built In™, with the OTR OTRFF40108 Fuel-Water Separator, a crucial element to provide clean engine fuel free of water. By utilizing a specialized filter, this replacement component is able to capture contaminants before they enter the fuel line, while also removing excess water. Created with a heavy duty construction to reduce the frequency of filter changes and increase service life. OTR understands what it takes to repair and maintain Class 6-8 trucks, so they deliver solutions, making your job easier and more efficient. OTR warranties are comparable to or better than OE and top brands. All heavy duty truck parts offer the same form, function, and fit as the OE replacement parts. FleetPride is your First Click in Heavy Duty®.