The Fleetguard FS19765 Fuel Water Separator Filter is designed for use with Cummins ISX and Paccar MX diesel engines. Made with a combination of paper and metal materials, this filter includes an O-Ring, Gasket, and Seal for a secure fit. It comes with a 3-year manufacturer warranty and is compatible with interchange part numbers P550851 and PF7930. The filter is specifically designed for fuel water separation and is a reliable choice for maintaining the performance of diesel vehicles.