Many orders ship free — you always see your exact shipping cost before you pay
Synergy Manufacturing Holley EFI Systems Universal V8 Wiring Harness
Hover to zoom

Holley EFI Systems Universal V8 Wiring Harness

In Stock
MPN: 558-504
Only 4 left in stock - order soon!
$899.95$1,053.47SAVE 15%
Starting at $75/mowithaffirm
Fits:Universal Fit

Holley EFI Systems Universal V8 Wiring Harness

1

Secure Checkout

SSL Encrypted

Easy Returns

30-day policy

Guaranteed Fitment

Or your money back

Pay Over Time

With Affirm

Usually ships in 1-3 business days

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.

KEY FEATURES:
Kits Includes main power harness Universal MPFI main harness V8 injector harness Works with Holley HP or Dominator ECUs.

SPECS:
Emission Code 4 Harness Application Ford, GM, UNIVERSAL Ignition Type CD Ignition (No Timing Control) Injector Connector Jetronic / Minitimer (Bosch) Product Type Harness Kit Part Number 558-504

Earn 899 Yittzy Rewards points with this purchase — 1 point per $1 spent. Join free

Compare A/C Clutch and Compressor Options

See how this product compares at different price points

Complete the BuildMore from Synergy Manufacturing

Related Articles

You May Also Like