859684-1 – Gauge – Temperature – Mercury

859684 gauge offers a dependable way to monitor engine water temperature on Mercury outboard motors. This genuine Mercury instrument fits many standard outboards and supplies accurate temperature readings to help you avoid overheating and maintain engine health.

The gauge works for boats that require a dedicated water-temperature instrument, and it installs into regular dash cutouts. It integrates with factory wiring and temperature sending units. The gauge features a clear lens, a robust housing suitable for marine conditions, and simple wiring terminals on the rear for sender, power, and ground.

This unit is used but remains in good shape: the face, bezel, and mounting studs are intact. The needle appears responsive, and the casing shows only light wear. As with any marine gauge, you should inspect the sensor and wiring for corrosion before installation. Because temperature gauges rely on a proper sender and grounding, ensure those are in good order before final use.

859684 gauge provides a practical solution for restoring dashboards, replacing broken instruments, or upgrading older boats. It gives you the reliability of a genuine Mercury-spec instrument without paying premium new-gauge prices.

Shop at Arizona Outboard Dismantlers to keep your outboard running strong and ready for the water.