For Rochester Quadrajet Carb Phenolic Insulator Spacer Heat Soak Riser 1/4 Open

For Carter WCFB Phenolic Carb Insulator Spacer 4 Barrel Heat Soak Riser 1/2" Kit

For Holley Spread Bore Carb Phenolic Insulator Spacer Heat Soak Riser 1/2" Open

For Holley Spread Bore Carb Phenolic Insulator Spacer Heat Soak Riser 1/4 Open

Fits Holley 4150 4160 4 Barrel Phenolic Carb Insulator Spacer Heat Riser Kit 1/2

For Early Carter AFB Phenolic Insulator Spacer 4 Barrel Carb Riser 1957-1964 1/2

For Early Carter AFB Phenolic Insulator Spacer 4 Barrel Carb Riser 1957-1964 1/4

Fits Stromberg WW Small Rochester 2G Holley 2110 Carb Spacer Phenolic Riser 1/2"