GOLDENROD 496 Bowl Water-Block Fuel Tank Filter with 1" NPT Top Cap Removes water from gasoline & diesel fuel, 17 micron filtration, Water absorbing polymers trap water Restricting fuel flow when it is time to replace the element, May be used by itself or in combination with a #495 fuel filter for added protection against microscopic particle contamination Zinc die-cast top cap with 3/4" NPT pipe fittings For use with GOLDENROD See Thru bowl fuel tank filter models 495, 495-3/4, 496, and 496-3/4 only Not for use with biodiesel blends over 20 percent or GOLDENROD bowl fuel tank filter models 497 or 497-3/4 Made in the U.S.A.