Cylinder base shims suitable for Petter PH1 and PH2 air cooled engines. Available in three thicknesses, 0.005", 0.010" and 0.015"
Equivalent to Lister Petter part numbers 360658, 361819 & 360657.
These are sold individually, you will need to purchase the required number to make up the correct cylinder head bump clearance on your engine.