www.Austin7Ulster.com › Cylinder Block Base Shim / Spacer Plate (Thin Type) Cylinder Block Base Shim / Spacer Plate (Thin Type) £8.99 sold out Aluminium spacer plate, for when your pistons are too close to the top of the bores. Thickness approx. 0.57mm / 0.023” Aluminium spacer plate, for when your pistons are too close to the top of the bores. Thickness approx. 0.57mm / 0.023” Sold Out Added! You Might Also Like Fuel Pump Gasket £0.90 Valve Guide - Stepped Type from £6.99 Cylinder Block Base Shim / Spacer Plate (1mm Thick) £8.99 Pair of Inlet Manifold to Exhaust Manifold Gaskets £1.60 Wide Fan Pulley (Coil type) £18.99