Part Number: Compatible with Mercury Marine/ Mercruiser 97258A1; Compatible with OMC 171960 Compatible with Sierra 18-5898; Compatible with Crusader 700427
171960 Water Temperature Sensor Sender Compatible with Mercury Marine Mercruiser OMC Outboard V6 V8 4.3 5.0 5.7 8.2 7.4 350 454 5.0 5.8 ( Not suitable for Mercruiser 5.7 engines)
1/2 NPT Coolant Temp Sensor Compatible with Mercury Marine OMC Crusader Sierra Outboard
Water Temperature Gauge Sender Thread: 1/2 Inch x 14 NPT; Removed with 7/8 socket
It Is a Replacement Part Not Original Part. But It Can Work Good For You.