Docooler&reg; Aluminum Alloy Vacuum Manifold Kits 6 Port 1/8 NPT Turbo Wastegate Boost Block Intake Manifold Universal Modification Accessory Made of high quality aluminum alloy. The surface is anodized for a long lasting, brilliant finish. Includes six 1/8" vacuum ports,two 3/8" inlet-outlet fittings. With 4 block-off plugs,1 inlet-outlet block-off plug. mounting hardware.A perfect modification accessory.