Master Cylinder Mounting Bolt Spacer For Firewall, '55 to '74

This is the spacer that inserts into the firewall on your Bug where the master cylinder bolts through the firewall.  The spacer prevents the mounting bolts from collapsing the firewall when securing the master cylinder.  If you've ever dropped one of these inside the hole, you'll surely appreciate that they're available!  Does not fit Super Beetle.