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Holley Performance HP EFI ECU And Harness Kit 550-605N


GM LS2 - Incl. ECU/Harness - Unterminated Universal Harness - Incl. NTK Oxygen Sensor

Pricing: $1,852.95


Holley Performance - HP EFI ECU And Harness Kit P/N 550-605N Features:

  • Simple Installation - Plug And Play
  • More Functionality
  • Easy To Use
  • Ideal For Everything
  • Industry Leading Self Tuning Fuel Strategy
  • ECU Is Fully Potted And Can Be Mounted In Engine Compt Or Intr.
  • Sealed Automotive And Marine Grade Connectors


Holley products have been the undisputed leader in fuel systems for over 100 years. Holley carburetors power every NASCAR Sprint Cup team and every NHRA Pro–Stock champion. Holley's products include performance fuel pumps, fuel injection, intake manifolds, cylinder heads & 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 Headers, NOS, Weiand, or Earl's, Holley products can give you the edge you need over the competition.


  • 550-605N
  • 550-605N
  • 090127687482
  • Holley Performance
  • New

Shipping Information

  • Item Requires Shipping
  • 9.0 lbs.
  • W11.0000” x H7.5000” x L12.2500”

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