12A/13B Gilmer Drive kit

Gilmer Belt High Torque Drive round tooth kit to suit early Mazda 12A 13B models, pre power steering models as no power steer pulley RX2,RX3,RX4 and RX7 series 1.

The round tooth still make the supercharger whine noise, but been round tooth are better for higher horsepower motors, don't strip belts as often as square tooth kits

** Please note, due to your alternator you may need to take the shaft size hole out **