12A/13B Underdriven water pump pulley

HaywireRotorsport.co.nz Verified independent store

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Lightweight water pump pulley made from aircraft-grade 6061-T6 aluminium for light weight, and black anodised for great looks. Offers faster acceleration through significant reduct ion 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. Show more