Fuel Injection System Wiring Harnesses

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, NTK O2, Wideband, Ford, Lincoln, Mercury, 2-valve, 4.6L, 5.4L, Kit

Part Number: HLY-550-616N

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, NTK O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 4.6L, 5.4L, Kit

Part Number: HLY-550-617N

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Fuel Injection System Wiring Harnesses, Holley EFI, 2V Modular EFI, with Main, Power, Injector Harnesses, for HP, Dominator ECU, Ford, 4.6-5.4L, Kit

Part Number: HLY-558-505

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Wiring Harness, Direct-Fit, EFI, Mass Airflow, Ford, Kit

Part Number: RFW-TDZ75

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Feb 18, 2026 if ordered today

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EFI Wiring Harness, Telorvek GM GM Ram Jet, Chevy, 5.7L, Kit

Part Number: RFW-RJ22

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Estimated Ship Date: Feb 18, 2026 if ordered today

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