This paddle style speed sensor is for use with many Weber engine powered applications including, but not limited to: Zodiac / Avon / Arimar Jets, 2004 Polaris MSX 110,140 & 150 PWC. The speed Sensor with Hall Effect sensor principal is for electronic speed gauge only. The bulkhead fitting is included. It fits directly into the Weber propulsion kit ride plate. See https://www.weberpower.com/weber-jet-propulsion.html for reference.