VP Racing Fuels 3042 Replacement Jug Cap
Cap for VP Racing Fuels 5-Gallon Fuel Jug and possibly other brands like Jegs, Jaz, Scribner, and possibly others. ID is 3.5 inches / 90mm. Use a 1/2 inch ratchet driver to unscrew little red plug. Comes with new O-Ring installed. Grease the O-ring for better sealing and longer life.