Overview The new Hi-Flow billet fuel rails are a direct fit for naturally aspirated Gen III Hemi engines including the 5.7L, 6.1L, and the 6.4L from 2003-2021. The fuel rails feature a 5/8" diameter fuel passage that provides more flow capacity for high horsepower applications over the stock rails. | The black anodized rails have -8 ORB ports on each end and an 1/8" NPT port for a fuel gauge installation if you choose to do so. The rails are designed with the factory injector clip reliefs so that your factory injectors and retaining clips can be reused. The kit includes fuel rails, mounting brackets and required mounting hardware. Gauge ports can be used as fuel feed connection with NOS P/N 17015NOS Rail feed from factory line can also be accomplished with P/N 534-211 Features Direct fit for naturally aspirated Gen III Hemi engines including the 5.7L, 6.1L, and the 6.4L engines Machined Billet extrusions with laser etched “Holley EFI” Logo Injector Clip feature retained so factory injector clips can be re-used. This is important as the clips locate the injector radially for proper injector spray pattern onto valves. 8 ORB ports front and back 1/8 NPT gauge ports machined directly into rail Mounting brackets and hardware included
