Mazda 12A & 13B Underdrive Waterpump Pulley
- Lightweight waterpump 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 130mm.
- Suits early 12A and 13B engines, not S4, S5 or later engines.
- Please check our other listings for underdrive crank pulleys and alternator pulleys.