performance BBK Performance Hi-Flow Billet Alum. Fuel Rail Kit GM 5018 Posted on January 20, 2024 by admin Fuel Rail – High-Flow – 6 AN Female O-Ring Inlet – 6 AN Female O-Ring Outlet – Aluminum – Red Anodize – Hardware Included – GM LS-Series – LS1 / LS6 – Kit. alum billet fuel hi-flow performance rail