REPRODUCTION. You are purchasing one carburetor insulator spacer. This is used on Rochester 4GC or Carter AFB carburetor single 4-barrel (4BBL) applications. Replaces Part # 1473021
PLEASE NOTE: Compare to yours for proper fitment, some vehicles may have been "retrofitted" to use the later style insulator for 1963-1966 models that incorporates a PCV fitting on the insulator spacer. If this is the case, please use our insulator spacer for 1963-1966 carburetors.
See the diagram in the "Instructions" tab for proper installation on Carter Carburetors.
1957-1962 Cadillac Models WITH Carter AFB or Rochester 4GC Carburetors