We're swapping the 10-bolt-rear disc brakes on our Chevrolet 3100 truck using the CPP 10/12-Bolt Rear Disc Brake kit for 1947-1955 ... cover gasket. Minus the ... bracket and the flange.

The specific and patented shape of this new gasket design, named LATTYmultirating, represents a significant advancement in the field of flange gaskets by adapting to 4 different pressure classes.