The Cummins 1-1/4"-12 Thread Size Fuel / Water Separator is designed to keep your fuel system running at maximum efficiency. This fuel separator is constructed with heavy duty materials to ensure that even the smallest particles, as small as 2-3microns, are filtered out of the fuel. It is designed to handle fuel systems operating at pressures up to 60,000 psi and with tighter tolerances. This fuel separator is the perfect choice for your fuel system. FleetPride is your First Click in Heavy Duty®.