Rocker cover spacer to suit the JZ Holden cylinder head.
It was through customer requests that need to lift there rocker cover higher when fitting one of Joe Zullo’s JZ aluminum race heads. The rocker cover spacer to suit the JZ cylinder head is 10mm taller,
NOTE VALVE COVER NOT INCLUDED
It can be necessary to use this with some high lift camshafts & roller rockers. Aussiespeed rocker cover spacers are cut from billet aluminum sheet.