Quicksilver 97258A1 Water Temperature Sender 1/2-14 NPT for MerCruiser Engines

The Quicksilver 97258A1 Water Temperature Sender is a genuine OEM replacement temperature sensing unit designed for MerCruiser stern drive and inboard marine engines. This sender monitors engine coolant temperature and transmits an accurate signal to your water temperature gauge, providing critical real-time engine health data to help prevent overheating.

Key Features:

• Thread Size: 1/2"-14 NPT — removable with a standard 7/8" socket
• Genuine OEM part — direct replacement for original Mercury Marine / MerCruiser equipment
• Compatible with 4-cylinder, V6, and V8 MerCruiser sterndrive engines using a 1/2" NPT water temp sender
• Also compatible with OMC, Crusader, and Pleasurecraft marine engines
• Designed for use with standard marine temperature gauge systems, including dual-station setups

Cross-Reference Part Numbers:

• Mercury Marine / Quicksilver: 97258A1
• Sierra Marine: 18-5898
• OMC / BRP / Evinrude Johnson: 171960 / 509448
• Crusader Marine: 700427

This is a direct OEM-quality sender that installs quickly and restores reliable temperature monitoring to your marine engine's instrument cluster. Ideal for maintaining accurate gauge readings and protecting your engine from undetected overheating conditions.