Made in USA. This Fuel Injection Fuel Filter Kit For 3/8 Inverted Flare is not our most glamorous fuel filter kit but it is one of our favorites because of the price and serviceability. Included in the kit are two 16MM-1.5 x -3/8 inverted flare adapter fittings and a replaceable GM Fuel Injection Filter (Part #G3727) that is readily available at parts stores and even discount stores. This kit is designed for use with 3/8" steel tubing with 45 degree inverted flares and 5/8-18 flare nuts.