Make/Model Search
Make/Engine Search

In Stock
- In Stock Items, Including at a Supplier. Ships In a Few Days. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Make/Engine
In Stock

Selected Filters

Loading...

Availability

- In Stock Items, Including at a Supplier. Ships In a Few Days. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filters
Make/Engine

Fuel Injection System Wiring Harnesses

Showing In Stock Items. Show All 4 Items.

Individual Parts

Part Groups

Results 1 - 1 of 1

Holley EFI Systems Main Wiring Harnesses 558-503

Holley EFI Systems Main Wiring Harnesses 558-503

Holley EFI Systems Main Wiring Harnesses 558-503

Fuel Injection System Wiring Harnesses, Holley EFI, Includes Stealth Ram/TPI Main, Power, Injector Harnesses, for HP, Dominator ECU, Chevrolet, Kit

Part Number: HLY-558-503

Not Yet Reviewed

Estimated Ship Date: Jan 22, 2026 if ordered today

...Loading

Estimated Ship Date: Jan 22, 2026 if ordered today

1

Page 1 of 1

Modal Header

Call To Order

This is a custom order part. You can order this part by Contacting Us.