Standard Replacement Paper Gasket, Fits All Holley Bowl Screws. Holley® has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers®, Flowtech® Exhaust, NOS® Nitrous, Weiand®, Earl's Performance Plumbing®, or Diablosport® - Holley products can give you the edge you need over the competition.
  • Bolt On Carburetor Replacement
  • Throttle Body Mounted ECU
  • Supports Up To 650hp [4 Inj. Version]
  • Supports Up To 1250hp [8 Inj. Version]
  • 4 Wire Connection
  • Color Touchscreen
  • Calibration Wizard
  • Self Tuning ECU
  • Wideband Oxygen Sensor
Country of Origin (Primary) US
Cylinder Head Type Standard
Emission Code Off Road
Engine Make/Size N/A
Fuel Rate OEM
Harmonized Tariff Code (Schedule B) 8409914000
Hazardous Material Code N
Life Cycle Status Code 2
Life Cycle Status Description Available to Order
MSDS Required Flag N
NAFTA Preference Criterion Code B

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Holley 550-511 EFI Kit Black

  • Brand: Holley
  • Product Number: 550-511
  • $999.99