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. Comments 0 comments Please sign in to leave a comment.
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