HOLLEY
Wiring Harness Adapter Hyperspark Ignition
SKU: HLY558-323
$51.99
EFI Wiring Harness - Ignition Adapter Harness - HyperSpark Distributors to Holley EFI - Each
Confirm fitment; real people handle every
Shipping estimate
Enter your ZIP for live rates. Final shipping is confirmed at checkout.
Comments & builder notes
Share fitment tips, install notes, or questions. Customers, the shop, and Grok can all chime in. New comments notify the Cunningham Customs team for review.