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Holley EFI

Weatherpak to GT (Stainless Steel) MAP Adapter Harness

Part # 558-466 Be the first to write a review
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These two new MAP sensor adapters from Holley EFI allow you to quickly add a stainless steel MAP sensor to your existing installation. Holley part #558-466 adapts harnesses with a (MPFI) Weatherpack 3-pin connector to the 3-pin Delphi GT connector, commonly found on aftermarket stainless steel MAP sensors, such as the Holley 5-BAR MAP sensor, part #554-108. Holley part # 558-467 adapts harnesses with a Delphi M/P 150 3-pin connector, commonly found on LS engine harnesses, to the 3-pin Delphi GT connector


  • Genuine OEM (original equipment manufacturer) Connectors
  • Techflex F6 loomed harness provides protection from engine bay dirt and grime, while matching your Holley EFI harness for a clean installation
  • Plug and play pre-termination allows you to quickly convert any installation to an aftermarket MAP sensor

About Holley EFI

Holley is the new standard in EFI! Whether you're engine swapping your classic car or need to manage 4000 horsepower in your twin-turbocharged drag radial race car, Holley EFI has the solutions you need to get your project up and running better than ever!

Brand Holley EFI
Emission Code4
Product TypeMAP Sensor
Part Number558-466

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle


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     X  Holleydays 2021
     X  Holleydays 2021