Cam Sync, Camshaft Sensor; Hall Effect; M12x1; For use with Flying Magnet Target

Part #: 554-125

Brand: Holley EFI


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Holley EFI Cam Sync Signal is designed to generate a cam sync input signal to the ECU when used in flying magnet cam trigger setups. This sensor is a Hall Effect sensor, meaning it outputs a square wave signal, which is ideal for use with most electronic fuel injection systems.

Camshaft / Crankshaft Sensor Flying Magnet Sensor

Part #: 554-125
  • Length: 6"
  • Width: 3.25"
  • Height: 3.25"
  • Emissions Code: 5
  • Prop 65: No
Installation Notes:

This sensor is to only be used with a "flying magnet" target like Holley P/N 554-126. The internal Hall switch triggers from the South Pole of a magnet. It will not detect a ferrous metal target.


  • 3 wire hall-effect camshaft sensor, generates digital square-wave signal
  • For use with flying magnet targets only – South pole of magnet facing sensor
  • Can operate from 8-20 volts; mating connector included
  • M12x1 threads for finer gap adjustability; Approx. 1.5” length
  • "554-124