Mazda 12A & 13B Underdrive Water Pump Pulley A4 Must be run with fixed

Must be run with fixed cam timing

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Nissan Silvia S14 SR20

Mazda 12A & 13B Underdrive Water Pump Pulley A4 Must be run with fixedLightweight water pump 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