For Rochester Quadrajet Carb Phenolic Insulator Spacer Heat Soak Riser 1/2" Open
This is a 1/2" thick phenolic open riser for the Rochester Quadrajet 4 barrel carb. Add a little performance to your machine the cheap way, and keep the heat away from the carburetor to solve the heat soak or carburetor boiling issues. Includes free gaskets, nuts, and washers.