Phenix Industries F68380-4 Blue GM Fuel Rail 3/8" Screw Type To AN -6 Male Adapter Fitting

These adapters are for stock LS style fuel rails. They adapt the factory 3/8" feed fitting to #6 AN. 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.

The 2 piece design from Phenix Industries. The back end of the fitting threads out of the fitting and slides over the hump on your 3/8" fuel rail. Then you'll thread the adapter over the fuel rail, sealing it with two o-rings. This 2 piece design prevents the adapter from ever coming off of the fuel rail unlike the push on clip style.