what size is the intake hole in the MACE COLD AIR INTAKE BOX FOR HOLDEN VB VC VH VK VL RB30 3.0L I6? Jason March 15, 2024 03:05 The size of the hole for the piping in our V6 CAI kits is 3 inches (76mm) unless other stated. Comments 0 comments Please sign in to leave a comment.
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