TOYOTA SUPRA A90 A91 & BMW G-SERIES B58 2nd GEN BILLET INTAKE MANIFOLDThis Fully Billet CNC Intake manifold will provide the best Air stream for your B58 engine and maximize its performance. We have eliminated the original intercooler system while we increased the length of runner and it changes this intake manifold flow amazingly. We have maintained the water coolant way through a channel under the plenum in order to maintain the plenum temperature low. For this design the flange will use back the original oring