he gasket is included in the MC adapters that I sell. I don't know if the gasket is for sale anywhere, I have them made for me.
I bought your adapter from Mancini Racing a few years ago. A gasket was not included. They had two different styles available. Yours and a MP part. Yours looks WAY cleaner/nicer so that's the one I bought.
what is the reason for the gasket ? shruggy
if the master cylinder leaks, it needs rebuilt or replaced.
To keep dust/dirt out of the interior I would guess. Maybe water could get in if it leaked down the firewall onto the master.
