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Holley 550510 Electronic Fuel Injection

Holley 550510 Electronic Fuel Injection


  • $1,188.00


  • Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange & Spread Bore manifolds - (Spread Bore Sealing Plate Part #9006 is recommended)
  • Throttle body mounted ECU – no extra boxes to mount. Supports up to 650hp with Four 100 Lb/Hr Injectors!
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM). A Flame Arrestor is REQUIRED for marine installations, such as part number, 720-1 or 720-13
  • Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI!. Simple Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required! Note : Refer to the PDF attached below in Technical Specification for User Manual

WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.