MSD Performance 8491 - Tach Drive Adapter, Tang to Square Drive

The standard tach drive for MSD tach drive distributors is a 3/16 inch tang drive cable. In most cases this type of drive will work, but for those who require the 0.104 inch square drive (Corvette style), MSD offers a tang to square drive adapter to fit all MSD tach drive distributors.

• Fits tach drive distributor assembly
• Tang to square drive