New Old Stock Lister JP, JS & JK 0.005" Copper Cylinder Head Shim for use on 1,2,3 & 4 cylinder variants.

These are used to obtain the correct bumping clearance between the piston crown and the cylinder head of 0.045" and 0.050".

These are Lister parts and available from stock.

Lister Part No. 010-03179 or 10-3-179

***Please note that our experience of the currently available aftermarket head gaskets supplied by many other suppliers are of the incorrect thickness. In some cases up to 0.020" too thick which makes achieving the clearance above impossible and will increase smoke levels from your engine due to lowered compression ratio. Because of this and the difficulty in sourcing original Lister gaskets Marine Power Services are currently investing in the tooling to be able to manufacture and supply head gaskets which are correct to the original Lister design.***