Holley GM LS 24X EFI Harness Kit 558-500

Item #22884

Made in the USA
Holley GM LS 24X EFI Harness Kit 558-500
GM LS1/6, 24X Crank Sensor, Bosch Injector
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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


(1)Holley GM LS 24X EFI Harness Kit 558-500


Brand: Holley EFI
Emission Code: 4
Harness Application: LSX
Product Type: Harness Kit
Part Number: 558-500

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

• Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle


Instructions for Part# 558-500

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


1 Year Manufacturers Warranty

Eastwood Offers Free Lifetime Technical Support

Click here for product SDS information

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