Holley 558-504 Universal V8 MPFI EFI Harness KitUniversal V8 MPFI Part Number: 558 504 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 comes complete with the main harness, power harness and injector harness to support your primary system. Features and Benefits Universal Simple installation Works with Dominator and HP Includes main power harness, MPFI main
Shopping security
Each payment you make on thelockerguy is secured with strict SSL encryption and PCI DSS data protection protocols
product description
Why choose thelockerguy wholesale?
Universal V8 MPFI
Part Number: 558-504
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 comes complete with the main harness, power harness and injector harness to support your primary system.
Features and Benefits
• Universal • Simple installation • Works with Dominator and HP • Includes main power harness, MPFI main harness, and V8 injector harness
To complete your installation, we recommend including a Holley ECU and a capatible O2 sensor.