Holley
GM PWM ALTERNATOR HARNESS
SKU: H00E 558-475
Description
Part #: 558-475
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.
Features:
- 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
For use with 2007+ PWM GM Alternators
Fitment
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Available on iOS & Android
Specifications
| Brand | Holley |
| Part Number | H00E 558-475 |
| Weight | 0.37 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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