Holley EFI's Cam Sync Signal sensor generates the cam sync input signal your ECU needs when running a flying-magnet cam trigger setup. Built as a Hall Effect sensor, it produces a clean digital square-wave output that's compatible with most electronic fuel injection systems.
Specifications:
- Sensor Type: Hall Effect
- Thread Size: M12x1
- Target Type: Flying magnet only (triggers from the South pole of the magnet)
- Operating Voltage: 8-20V
- Length: Approx. 1.5"
- Mating connector included
- Part Number: 554-125
This sensor is designed to work only with flying-magnet targets, such as Holley P/N 554-126, and will not detect a ferrous metal target.
FAQ
What type of cam trigger target does this sensor need?
It's built exclusively for flying-magnet cam trigger setups and triggers from the South pole of the magnet. It will not detect a ferrous metal target.
What voltage range does the sensor operate on?
It operates from 8-20 volts, making it compatible with most 12V automotive electrical systems.
Does the kit include a mating connector?
Yes, a mating connector is included with the sensor.
What is the thread size?
The sensor uses M12x1 threads, which allow for finer gap adjustability during installation.

