Edelbrock 9265 Square-Bore Heat Insulator Gasket
The Edelbrock Square-Bore Heat Insulator Gasket is designed to prevent fuel percolation in Performer Series and Thunder Series AVS carburetors exposed to extreme underhood temperatures.  This is a 4-barrel gasket, which is made up of a nitrile rubber composite.  It has a 2-hole divided center and is 0.320 inch in thickness.  This gasket comes with extended carburetor studs.