This throttle body flange is perfect for fabricating your own custom intake for any OBD2 12V VR6 powered car. (This flange will not fit OBD1 throttle bodies) ---Presision CNC machined from billet 6061-T6 aluminum ---72 mm center bore ---Flange thickness is 0.475" ---Threaded bolt holes are M6x1 ---Hand buffed & inspected for consistent high quality --- --- Made in the USA Personalize your build with an MRP component and make your custom project stand out from the crowd.