This adjustable alternator bracket is ideal to replace your old style bracket found on the 12a and 13b first generation RX-7 along with the RX-7 FC.
This bracket uses the modern style tension adjuster bolt like those found on the FD and RX-8 alternator brackets. This makes adjusting your alternator and its belt tension hassle free and accurate.
Further more with the lock bolt locked off your alternator should not move while in use. meaning your belt will not become slack while driving.
This bracket will fit 1979-1991 Mazda RX-7’s