Mr. Gasket 98 Carburetor Heat Dissipater - Measures 1/2-Inches Prevents engine heat from vapor locking gas in the carburetor Delivers a smooth transition of the air and fuel mixture to the intake and increases flow for optimum performance Made from heat absorbing layers of a special aluminum alloy .500 inch thick Ideal for square bore four hole Holley and Carter AFB carburetors Insulates the carburetor from engine heat doubles as a mounting gasket and provides added clearance for linkages