Honda brake master cylinder diaphragm is brand new never used. Still in package. Genuine Honda OEM. Proper for the following models.
Honda CB400T 1979-1980
Honda CM400 1979-1980
Honda CM400T 1979-1980
Honda CX500 1979
Honda CX500C 1979-1980
Honda CX500D 1979-1980
Honda CB650 1979-1980
Honda CB650C 1980
Honda CB750K 1979-80
Honda CB750L 1979
Honda CB750F 1979-1980
Honda CB900C 1981-82
Honda CBX1000 1979-80
Honda GL1000 1979
Honda GL1100 1980-81