www.Austin7Ulster.com › Block Base Shim / Spacer Plate (Thin Type) Block Base Shim / Spacer Plate (Thin Type) £8.99 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” Add To Cart Added! You Might Also Like Repair Plate for Side Water Manifold £11.99 Core / Welch Plug Small £0.60 3 x Mouse Trap Clutch Arm Springs £4.50 Rear main engine bearing housing Tab Washer for oil seal plate £1.10 Felt Oil Seal for Mag Engine starting nut £2.50