Availability

Holley EFI Systems Wiring Harnesses

4.77 out of 5 stars 31 Customer Reviews

Holley offers a variety of direct replacement EFI wiring harnesses, including multi-port, sequential, and throttle body injection styles. These units are made with premium components to ensure better reliability and performance for your ride--and they're compatible with many engine swaps. Holley EFI systems wiring harnesses are sold individually or as a kit; choose the model needed for your fuel injection application.

Showing In Stock Items. Show All 1 Items.

Results 1 - 1 of 1

Holley EFI Systems Wiring Harnesses 558-431

Fuel Injection System Wiring Harnesses, Holley EFI, Crank/Cam Ignition Harness, Plug-and-Play, for Ferrous Hall Effect to HP/Dominator Systems, Each

Part Number: HLY-558-431

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

1

Page 1 of 1