Fit For 2bl Holley Motorcraft And Autolite Carburetors 4412, 2150, 2300 And Other Similar Carburetors. Replace Part Number: 4412, 2150, 2300. For Holley Autolite Motorcraft 2 barrel Carburetor spacer 1" Heat Insulator4412 2150 2300 Carb, It isolates carburetor from engine heat, prevents vapor lock and stabilizes fuel temperature.
