Available from Scott Drake, this rare 1969-70 Mustang Shaker Vacuum Motor works on all shaker hood set-ups including Boss 302, 351 Cleveland or Windsor, and 428 Cobra Jet. Operating off of engine vacuum, the Shaker Vacuum Motor regulates the opening and closing of the flapper plate which allows more air into the carburetor when needed. This wonderful reproduction is silver zinc plated, just like the original.