Holley EFI LS Hi-Flow Fuel Rail Kit - Includes Hose & Fittings - Fits LS1, LS2, LS3, LS6 & L99 factory intakes

Holley EFI
Sale price


Regular price $359.00
LS Hi-Flow Holley EFI Fuel Rails - Same as 534-209, but also includes (6') braided hose, (4) 90º and (2) straight -6 hose ends


  • Modular Design w/ Removable Top
  • Overall Height: 13.34‚Äù (w/ EFI Top - 95mm or 105mm) ‚Äì See Drawing
  • A-B Height: 12.10‚Äù (w/ Carb Style Top - 2 x 4150 or 2 x 4500) ‚Äì See Drawing
  • Height at Plenum Flange: 9.44‚Äù
  • Port Size: 2.06‚Äù High x 1.53‚Äù Wide
  • Runner Length: Approx. 6.5‚Äù
  • Large Plenum Volume of 549 Cubic Inches (w/ 1 x 95mm or 1 x 105mm Throttle Body Top)
  • Available With or Without Injector Ports in the Runners
  • Intakes w/ Injector Ports Include Fuel Rails w/ Dual Mounting (1.48‚Äù or 2.56‚Äù O-ring to O-ring injector length)
  • Fuel Rails are Anodized, Laser Etched, and Machined for 8AN O-Ring Fittings at Each End
  • Rear of Plenum Machined for MAP & 3 Vacuum Ports
  • Head Flange has Clearance for Fuel Supply to High Pressure Pump
  • Increased Runner Wall Thickness for Custom Porting at the Plenum to Runner Entry on Each Runner
  • O-Ring Seals at Cylinder Heads & Plenum Top
  • Easy Assembly w/ Top Mounted Screws on Plenum Top (all except front 2 screws)
  • Several Top Options: 1 x 95mm, 1 x 105mm, 2 x 4150, 2 x 4500, or Blank Flange for Custom Throttle Bodies
  • 3500-8000+ RPM Power Band