What is the size of the bolts come with MACE 12mm Performance Manifold Insulator kit to suit Holden Ecotec L36 3.8L V6 (95-00)? Jason July 04, 2023 08:21 Updated With the exception of the 4 M6 screws, all of the hardware that we supply in the bolt packs of our kits need to be custom made to be able to install the insulator. Related articles What Size Belt Is Required For My Pulley Running The Standard Balancer? Comments 0 comments Please sign in to leave a comment.
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