• Holley 558-304 HEI Ignition Adapter Wiring Harness
  • Holley 558-304 HEI Ignition Adapter Wiring Harness

Holley 558-304 HEI Ignition Adapter Wiring Harness

$63.19 USD
$63.19 USD
$63.19 USD
Shipping calculated at checkout.

Vendor : HOLLEY

Product Type : Ignitions and Electrical

Sku : HLY558-304

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9
units left in stock!

✔ Veteran-Owned Business  |  ✔ Verified Fitment (SEMA Data)  |  ✔ Ships 1–3 Business Days  |  ✔ 30-Day Returns 

The Holley 558-304 HEI Ignition Adapter Wiring Harness connects a GM small-cap HEI distributor to Holley Avenger, HP, or Dominator EFI systems. Designed as an ignition adapter harness, it provides a dedicated wiring solution for integrating the distributor with the specified Holley EFI applications.

This harness is identified as the Holley HEI Ignition Harness and is supplied as an individual piece. Its application-specific design helps simplify the connection between a compatible GM small-cap HEI distributor and the Holley EFI system, supporting a clean and direct installation.

Use the Holley 558-304 when an ignition adapter harness is needed for a GM small-cap HEI distributor and a Holley Avenger, HP, or Dominator EFI setup. Confirm application requirements before installation to ensure the harness matches your distributor and EFI configuration.

Features:

  • Application: Connects a GM small-cap HEI distributor to a Holley EFI system
  • Compatibility: Designed for Holley Avenger, HP, and Dominator EFI systems
  • Product Type: HEI ignition adapter wiring harness
  • Quantity: Sold individually