Holley Carburetor Renew Kit 2300, 4150, 4160, 4165, 4175 Models # HO37-1537Holley Carburetor Renew Kit 2300, 4150, 4160, 4165, 4175 Models # HO37 1537 Carburetor Rebuild Renew Kit, Holley 2300, 4150, 4160, 4165, 4175 Models, Kit Do you need to refurbish your tired Holley carburetor? A Holley Renew kit brings your carb back to original specs and like new condition! These carburetor Renew kits from Holley come complete with all of the necessary gaskets, O rings, pump diaphragm(s), needle and seat(s), power valve(s), detailed