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Holley

Holley EFI Systems Main Wiring Harnesses

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Choose EFI main power wiring harnesses from Holley to meet your needs. Several choices are offered—TBI, LS applications, multi-point, and un-terminated harnesses—to feed and carry your engine's electrical supply. Get wired for electronic fuel injection with Holley EFI systems main wiring harnesses.

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Holley EFI Systems Main Wiring Harnesses for 1983-1993 MUSTANG - 558-128

Holley EFI Systems Main Wiring Harnesses for 1983-1993 MUSTANG - 558-128

Holley EFI Systems Main Wiring Harnesses for 1983-1993 MUSTANG - 558-128

Fuel Injection System Components, Holley EFI, Main Harness, Plug-and-Play, Factory PWM/IAC Connectors, with OE Injectors, Ford, Mustang, 5.0L, Each

Part Number: HLY-558-128

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Estimated Ship Date: Today

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Estimated Ship Date: Today

Holley EFI Systems Main Wiring Harnesses for 1983-1993 MUSTANG - 558-513

Holley EFI Systems Main Wiring Harnesses for 1983-1993 MUSTANG - 558-513

Holley EFI Systems Main Wiring Harnesses for 1983-1993 MUSTANG - 558-513

Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, Main Harness, Terminator X, Terminator Max X Systems, Ford, Mustang, 5.0L, Each

Part Number: HLY-558-513

Not Yet Reviewed

Estimated Ship Date: Oct 13, 2025 if ordered today

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Estimated Ship Date: Oct 13, 2025 if ordered today

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