Holley: Billet LS7 Hi-Flow Fuel Rails

Engineered specifically for the factory LS7, with particular attention paid to ensuring an easy installation, the new Billet LS7 Hi-Flow fuel rails from Holley are designed to unleash the full potential of your LS7. Featuring a 6061 aluminum extrusion with a .656” center bore for improved fuel flow, this product is ideal for builds using a stock-style injector or a set of Holley’s EV1/Bosch-style injectors.


  • Black anodized finish with laser-etched Holley EFI logo.
  • 6061 billet aluminum for superior durability.
  • Includes 4 -6AN Male to 3/4 -16 O-ring adapters (machined to optionally accept -8 AN to 3/4-16 O-ring fittings.
  • Includes brackets, hardware, and 8 larger injector O-rings for a leak free installation.
  • High-volume fuel passage to dampen fuel pressure oscillations.

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