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For use with 2007+ PWM GM Alternators.

Plug and play Holley EFI alternator harnesses for late model engines with Pulse Width Modulated alternators. This includes most 2007+...
Holley EFI Part #: GVMR_558-475
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For use with 2007+ PWM GM Alternators.

558-475_01.jpg
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.

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