Basic carburetor repair kit including the gaskets, needle, seat and throttle shaft.This kit fits Holley Carbs # List2923, List3012, List3013, List3658, 12R31338, R2923, R3012, R3013, R3657, R4119-A with a two-piece gasket. These carburetors are often found on Ford 2000, 3000 and 4000 series tractors.