5.0 · 1 review
SKU: 558-475

GM PWM Alternator Harness

$89.99
FREE delivery
Description

ABOUT THIS PRODUCT

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.

Product Features:
  • Plug and play with Holley EFI and Terminator X main harnesses
  • 2007+ PWM GM alternators
  • Use with late model OEM alternators
  • Include detailed instructions for installation and software configuration
Specifications
Brand
Holley EFI (770)
SKU
558-475
Product type
Automotive
Guides & Resources
User Guide
Returns Policy
Shipping Information

Free shipping on all orders. Most items ship next business day after your order is placed.

Returns Policy

Returns are accepted when the product is in its original, unopened container. Contact us if you have questions about your order.

View full returns policy

Customer Reviews

5.0

Based on 1 review

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C
Chris W. Verified Buyer
07/05/2025

Highly recommend

Good experience overall from checkout to delivery.

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