These jets suit all Rochester 4G (4 jet) carburettors. The will also fit other Rochester carburettors, but the inlet and outlet profiles are different, which alters the flow characteristics.
Select your size from the options menu below.
If you need jets for B, 2G (2 jet) or H carburettors, see our R120-10-XX
If you need jets for a quadrajet or dualjet carburettor, see our R120-13-XX