Holley EFI - 558-325
Holley EFI Pro-Billet Ignition Adapter
Adapter MSD Pro-Billet Distributors to Holley EFI Main Harnesses, for use with Terminator X EFI.
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.
- Allows For Plug And Play Ignition Timing Control