Carter Carburators - 4 bbl - 4 hole 1 7/16" bore - . Performance Bulk Packaged. Made from durable 1/16" thick cellulose/nitrile composite gasket material. Precision die cut for an excellent seal and fit. Available bulk or skin packagedPit Stop USA offers Mr. Gasket Carburetor Base Gasket - 4 Hole - Fits Carter Afb - 1-7/16" Bore 57 at low everyday prices. Be sure to check out all of our products from Mr. Gasket including Mr. Gasket Carburetor Gaskets.