Outfit your engine with essential parts that come with Expertise Built In , like the OTR OTRFF40039 Fuel Filter, designed to provide a clean and contaminant-free fuel line. This replacement fuel filter protects the fuel injection system by capturing harmful particles before the liquid is combusted in the engine. Engineered with robust materials to withstand demanding conditions and extend the interval time between each component change. 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 .