Master Cylinder Gasket

[73mockone]

The Chassis Assembly Manual indicates that there is a gasket between the master cylinder and the booster labeled C9AA-2B355-D for my 71 Mustang. However, I can find little if any information on this part, or its relative importance. Has anyone replaced this gasket with a master cylinder replacement? If so, where was it sourced?

 

[Sheriff41]

You could make one. Get a sheet of gasket material, make a pattern off the M/C mounting flange, and cut out your gasket. Not sure how critical it may be but it may keep moisture out of the booster.