Quicksilver 89771Q2 Threaded Hose BarbThreaded hose barb fitting 89771Q2 is for use with fuel tanks or water separating fuel filter brackets requiring a 1/4 in. NPT thread and hose barb for 5/16 in. (8mm) ID fuel line hose.Key Product Features Brass fitting for use at the portable fuel tank connector end of the fuel line or water separating fuel filter bracket; Fitting has barb end for 5/16 in. (8mm) ID fuel line and 1/4 in. NPT thread to fit to tank or bracket; For use with gasoline only ? do not use with diesel fuel; Replace older fuel lines and primer bulbs when you replace your connector; Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive; Application Information:A .250 inch ID brass fitting for use with gasoline fuel only. This material should not be used with diesel fuels.