High Flow Billet Fuel RailCustom billet fuel rail for the BMW with M50 intake manifold. A must have for a high horsepower car or when converting to E85 fuel with larger volume demands. This fuel rail is machined for 8 AN ORB o ring fittings on feed and return sides but will accommodate larger or smaller feed and returns with your choice of supplied adapters. You may choose a 10 AN feed fitting and a 6 AN return or whatever combination you like. Billet mounts and stainless