About This Product:
This 4mm spacer plate is designed for use with WJ heads and crankshafts featuring a 110mm connecting rod. For heads from other tuners with a squish band less than 2mm deep, a 5mm spacer plate is required.
Note:
When using this spacer plate on an original 180cc engine block, the lower two holes need to be drilled out to 9mm for proper fitment.