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Holley

Holley EFI GM Gen V GDI Sub Harnesses 558-221 Wiring Harnesses, EFI, V, Late, Sub-Harness, Direct Injection, Pre-Terminated, 4-pin Fuel Sensor, GM, Late LT Based, Engines, Each

SKU: HLY558-221

Wiring Harnesses
Holley EFI GM Gen V GDI Sub Harnesses 558-221 Wiring Harnesses, EFI, V, Late, Sub-Harness, Direct Injection, Pre-Terminated, 4-pin Fuel Sensor, GM, Late LT Based, Engines, Each

Holley

Holley EFI GM Gen V GDI Sub Harnesses 558-221 Wiring Harnesses, EFI, V, Late, Sub-Harness, Direct Injection, Pre-Terminated, 4-pin Fuel Sensor, GM, Late LT Based, Engines, Each

SKU: HLY558-221

Wiring Harnesses
A$537.77
LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.
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Description

Holley EFI GM Gen V GDI sub harnesses are available for early and late LTx engines. The GM fuel pressure sensor is mounted to the back of the driver-side fuel rail and is the identifier of each engine. Depending on which one your engine has will determine which Holley EFI GM Gen V GDI sub harness is required. Late engines use a 3-pin, and the early engines use a 4-pin fuel pressure sensor. Choose the appropriate sub harness for your engine.

Part Type

Wiring Harnesses

Data: v4.2 - Upd: 2026-10-13 18:47:13

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
558-221
Product Attributes - Part Type
Wiring Harnesses
Product Attributes - Product Line
Holley EFI GM Gen V GDI Sub Harnesses
Product Attributes - UPC
90127140833
Product Attributes - Harness Length
Standard
Product Attributes - Fuse Block Included
No
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Holley
StreetFX SKU hly558-221
SFX Item ID 4783755
Supplier Item Code 4783755
Manufacturer SKU 558-221
Manufacturer UPC 90127140833
Alternative References HOL558-221, 4-pin

Compatibility

Application Data
  • UniversalNo
    MakeCHEVROLET
    Beginning Year2014
    Ending Year2020
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size5.3L/325
  • UniversalNo
    MakeCHEVROLET
    Beginning Year2014
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.2L/376
  • UniversalNo
    MakeCHEVROLET
    Beginning Year2015
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.2L/376
  • UniversalNo
    MakeCHEVROLET
    Beginning Year2018
    Ending Year2020
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.2L/376
  • UniversalNo
    MakeCHEVROLET
    Beginning Year2019
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size5.3L/325
  • UniversalNo
    MakeCHEVROLET
    Beginning Year2019
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.2L/376
  • UniversalNo
    MakeCHEVROLET
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.2L/376
  • UniversalNo
    MakeCHEVROLET
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
  • UniversalNo
    MakeCHEVROLET
    Beginning Year2023
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy LT6
    Engine Size5.5L/333

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