SKU: HLY558-126
UPC: 090127054857
MPN: 558-126
The HOLLEY Flying Lead Main Harness (model 558-126) is a purpose-built wiring solution designed for custom EFI engine builds and high-performance fuel injection system installations. This harness serves as the critical backbone connecting your ECU to fuel injectors, sensors, and ignition components, making it ideal for engine builders and tuners working on various projects.
The flying lead configuration allows for flexible routing through tight engine bays and custom chassis layouts, featuring individual pre-terminated leads that connect directly to injectors, coils, and sensor inputs without requiring additional splicing or modifications. The harness is designed with proper gauge wiring and factory-spec connectors to ensure reliable signal transmission and power delivery under demanding conditions.
Serious DIY engine builders and professionals will benefit from this harness, which is suitable for engine swaps, carb-to-EFI conversions, and hot rod builds. Its compact size allows it to fit most engine compartments, making it a versatile choice for various fuel injection system installations.
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