40mm paper carburettor mount gasket to fit 40mm Weber, Solex and Dellorto carburettor mounts. 2 required per rubber mount/carburettor throat. 72mm hole spacing.
Note, some 1600 S3/S4 Spiders (and some late Alfettas) use a gasket with 80mm hole spacings on one side of the mounts (see part FL098).