Availability
Wiring Harnesses, Holley EFI, GM Gen V, GDI Late, Sub-Harness, Direct Injection, Pre-Terminated, 4-pin Fuel Sensor, GM, Late LT Based, Engines, Each
Part Number: HLY-558-221
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Harnesses, Holley EFI, GM Gen V, GDI Early, Sub-Harness, Direct Injection, Pre-Terminated, 4-pin Fuel Sensor, GM, Early LT Based, Engines, Each
Part Number: HLY-558-220
Not Yet Reviewed
Estimated Ship Date: Oct 6, 2025 if ordered today
Estimated Ship Date: Oct 6, 2025 if ordered today
Weatherproof Connectors, Holley EFI, GM LSx Engine, Main Harness Connectors, Connectors, Pins, Seals, Cavity Plugs included, Kit
Part Number: HLY-570-103
Estimated Ship Date: Today
Estimated Ship Date: Today
Weatherproof Connectors, Holley EFI, GM, MPFI/TPI, Main Harness Connectors, J1A/J1B Connectors, Pins, Seals, Cavity Plugs included, Kit
Part Number: HLY-570-102
Not Yet Reviewed
Estimated Ship Date: Oct 6, 2025 if ordered today
Estimated Ship Date: Oct 6, 2025 if ordered today
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