GOLDENROD 470-3/4 Bowl Fuel Tank Filter Top Cap with 3/4" NPT Zinc die-cast top cap with 1" 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.