Holley
Holley Wiring Harness Adapter Hyperspark Ignition - 558323
Holley Wiring Harness Adapter Hyperspark Ignition - 558323
Regular price
$67.99 USD
Regular price
Sale price
$67.99 USD
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- Ships direct from the brand or supplier
- Tracking emailed when it ships
- Free fitment check before you order
Holley Wiring Harness Adapter Hyperspark Ignition, with the part number and details listed below. Replacing a switch, relay or harness is usually a plug-in job once you find the fault.
Quick facts
- Brand: Holley
- Part type: Electrical part
- Part number: 558323
Listed fitment
- various ignition systems, this wiring harness adapter is a must-have for any serious automotive enthusiast looking to maximize their ignition performance.
- Choose HOLLEY for quality and reliability in your ignition and electrical needs.
Tip: Disconnect the battery before electrical work and check grounds first.

Holley electrical part: what to know
Many electrical faults are a bad connection rather than a failed part, so check grounds and connectors first.
Fitment notes
- Specs, lead time and warranty come from Holley and can change. The details above this guide are the latest we have.
Not sure it fits? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentWhat else to plan for
- Fuses and relays. Cheap to keep spares.
More for your car: Batteries & electrical · Batteries & electrical
Questions about electrical part
Will this fit my car?
Check the title and details above for the vehicles and part number it is listed for. If you are not sure, contact us with your year, make, model, engine and trim and we will confirm fitment before you order.
How do I find an electrical fault?
Start with fuses, grounds and connectors, then test with a multimeter.
Where do specs and warranty details come from?
From Holley. Each brand sets its own specs, lead times and warranty terms, and they can change. The product details above are the latest we have.
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