Overview The new Hi-Flow billet fuel rails are a direct fit for the Ford 7.3L Godzilla engines. The fuel rails feature a 5/8" diameter fuel passage that provides more flow capacity for higher horsepower applications versus stock rails. The black anodized rails have -8 ORB ports on each end and an 1/8" NPT port for a fuel gauge installation option. 534-265 includes fuel rails, mounting brackets and required mounting hardware, but 534-266 fuel rail kit includes everything from the 534-265 and 6 ft. braided hose, (4) 90 degree and (2) straight -6 hose ends Features Bright dip, black anodized finish with laser etched EFI logo 5/8” diameter fuel passage provides the flow capacity for higher horsepower applications Fuel rails fit stock intake manifold and factory injectors Fuel rails machined to accept -8 (3/4-16) O-ring fittings Includes (4) -6 to 3/4-16 O-ring adapters Includes fuel rails, mounting brackets, and required mounting hardware