No more boost leaks from the idle control valve port under your M50 intake manifold ! ... 1 M50 ICV Fitting with O-ring 1 Zip Tie (High Temp-120lb tensile strength) Fits all M50 , M52, S50, S52, with M50 Intake Manifold Swap ... SPA t3/t4 bottom mount m5x turbo manifold for e36 and e46 $ 570.00 $ 542.00 Add to cart;.