Holley EFI - 558-475
Holley EFI PWM Alternator Harness; Fits w/2007-Up GM Engines; Incl. Instructions;
Plug and play Holley EFI alternator harnesses for late model engines with Pulse Width Modulated alternators. This includes most 2007+ GM engines and most 2005+ Ford engines.
- Plug And Play With Holley EFI And Terminator X Main Harnesses
- Designed For Use With Late Model OEM Alternators
- Include Detailed Instructions For Software Configuration
Brand: Holley EFI
Emission Code: 5
Product Type: Harness
Warning: California Proposition 65
