Mazda 12A & 13B Underdrive Alternator Pulley

Lightweight alternator pulley made from aircraft-grade 6061-T6 aluminium for light weight, and black anodised for great looks.

Offers faster acceleration through significant reduction of mass having to be accelerated by the crankshaft. The effect is similar to a lighter flywheel, and the car feels more lively and willing to rev.

Pulley outside diameter is 75mm.

Suits early 12A and 13B rotaries through to series 5 RX-7 (vehicles with 15 mm alternator shaft).

Please check our other listings for underdrive crank pulleys and waterpump pulleys.

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Parts from Franklin Performance are such a great price because we are designers, the manufacturers and the seller of the parts - there is no middleman or resellers. You're buying top quality direct from the manufacturer.

Orders received before 3pm typically ship the same day. Our delivery target is overnight for North Island orders, and 1-2 days for South Island orders. Rural delivery can take a further 2-3 days depending on location.