GM LS 24X EFI HARNESS KIT 558-500

An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit for your GM LS engine comes complete with the main harness, power harness and injector harness to support your primary system!

• Harness Kit Includes
• Main Power Harness, LS1 Main Harness & V-8 Injector harness
• Simple Installation
• Works with HP or Dominator ECU's

NOTICE: You will need to purchase an ECU and O2 Sensor to make this a complete kit