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The Edelbrock 24-inch O2 sensor extension harness is a support item for Pro-Flo 4+ EFI systems, intended for installations that require a second downstream oxygen sensor. This 24" extension lets installers position an additional O2 sensor while maintaining compatibility with the Pro-Flo 4+ wiring architecture, simplifying wiring runs during swaps or custom exhaust routing when a secondary sensor is needed.
Edelbrock Pro-Flo 4+ EFI O2 Sensor Extension 24in Wiring Harness
