New carburetor, non rebuilt.. 1963-1967 C10 Panel Base 4.1L 250Cu. In. l6 GAS Naturally Aspirated 1963-1967 C10 PickupBase3.8L 3769CC 230Cu. In. l6 GAS OHV Naturally Aspirated. 1963-1967C20 SuburbanBase4.1L 4097CC 250Cu. In. l6 GAS OHV Naturally Aspirated 1963-1967C30 PickupBase3.8L 3769CC 230Cu. In. l6 GAS OHV Naturally Aspirated. Replacement No.: 7037009, 7023021, 7016322, 7026017, 7024004, 7023013, 7026029, 7036009, 7041861. If there is leakage, just simply adjust the float clearance..
