Holley
WIRING HARNESS, PRO BILLET IGN ADAPTER
SKU: H00E 558-325
Description
Part #: 558-325
Designed to plug and play with MSD Pro-Billet distributors and Holley EFI main harnesses with an ignition connector, such as part number 558-104.
Features:
- Allows for plug and play ignition timing control when utilizing an MSD Pro-Billet distributor.
Adapter MSD Pro-Billet Distributors to Holley EFI Main Harnesses, for use with Terminator X EFI.
Fitment
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Available on iOS & Android
Specifications
| Brand | Holley |
| Part Number | H00E 558-325 |
| Weight | 0.2 lb |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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