CBM MOTORSPORTS™ LS FUEL RAIL ADAPTER 3/8" TO -6AN FITTING Product Description:
These adapters are for stock LS style fuel rails. They adapt the factory 3/8" feed fitting to -6AN. They are proudly made here in the USA from a solid piece of 6061-T6 Aircraft grade aluminum. This size usually fits the feed side of an older two line system. It will fit most GM applications with the smaller 3/8" hard line. If you have an older LS1 or a truck, your application requires an inlet and return.