Rocker cover spacer to suit the JZ Holden cylinder head.
It was through customer requests that need to lift their rocker cover higher when fitting one of Joe Zullo's JZ aluminium 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 and roller rockers. Aussiespeed® rocker cover spacers are cut from billet aluminium sheet.