AeroFlow=Holden Rocker Arm Bridge Shim Kit 32 Piece Kit with 16x 1/64"

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* and 16x 3/64" Shims These Aeroflow rocker arm bridge shim kits will correct excessive hydraulic lifter preload on Australian V8 engines with bridge-mounted rocker arm assemblies. Excessive preload could be due to a cam change, head resurfacing or when reconditioning a cylinder head. These shims can be a quick and easy alternative to resorting to different length pushrods. The 32-piece kit includes 16 thin and 16 thick shims, which can be used to reduce lifter preload by .030" (thin shim), .060