The MSD 8278 is a replacement Hall Effect sensor for flying-magnet crank trigger setups using a 3/4"-16 threaded mount. As a Hall Effect sensor it outputs a square wave signal, making it ideal for use with most electronic fuel injection (EFI) systems. It's designed to work only with a trigger wheel that uses flying magnets and does not detect a ferrous steel target.
Specifications:
- Product Type: Hall Effect Sensor
- Sub Category: Sensors
- Thread: 3/4"-16 UNF
- Wiring: 3-Wire
- Warranty: Manufacturer's Limited 1-Year Warranty
- Part Number: 8278
Supplied with a mating 3-pin connector, pins, and seals.
FAQ
What type of trigger wheel does the MSD 8278 require?
A flying-magnet trigger wheel; it does not detect a ferrous steel target.
What signal does this sensor output?
A square wave signal, ideal for most EFI systems.
What thread size fits this sensor?
3/4"-16 UNF.
What comes included with this sensor?
A mating 3-pin connector with pins and seals.
How many wires does this sensor use?
A 3-wire design that's less susceptible to noise interference.

