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Holley EFI GM GEN V GDI Sub Harness

Part # 558-220 Be the first to write a review

For Early LTx Engines

Holley EFI GM GEN V GDI Sub Harness

Estimated Ship Date: 06/22/2026
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4

Emissions

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.

    See Emissions Details
GM GEN V GDI Sub harness for early LTx Engines. The fuel pressure sensor easily identifies these engines, early engines use a 4-pin fuel pressure sensor. GM uses two different fuel pressure sensors with the Gen V LTx engines. Depending on which one your engine has, will determine which harness is required. The Sensor is mounted to the back of the driver-side fuel rail.

Features:

  • Early LTx engines

About Holley EFI

Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!

Brand Holley EFI
CategoryAir and Fuel Delivery
Emission Code4
Harness ApplicationLT
Harness TypeInjector
Part TypeFuel Injection Harness
Product TypeHarnesses
Sub CategoryWire, Cable and Related Components
UPC090127140826
Part Number558-220
4

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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Instructions - GM LTx GDI Controller Harness - Analog Pressure Sensor - 271R1265A 3-11-2020.pdf
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