4JB1T Head Shim

Steel head shim for running longer stroke 4JJ1 and 4JH1 cranks in the 4JB1T. This is an alternative option to machining pistons to suit. It is recommend to be fitted to a freshly machined cylinder head surface and using correct Hymolar sealant. Please note these are made to order, approximately 1.5-2 week lead time is expected. Custom thicknesses are available on request. 
Manufactured in Australia.