859689-2 – Gauge – Oil Pressure – Mercury

859689 oil gauge delivers an authentic way to monitor engine oil pressure on your Mercury outboard. As an OEM-spec gauge, it provides clear and accurate readings so you can ensure your engine maintains proper lubrication, safeguarding performance and engine life.

This oil gauge installs into standard dash cutouts and integrates seamlessly with factory wiring and oil-pressure sender units. It features a clear dial face, robust marine-grade housing designed for saltwater or freshwater use, and straightforward terminal connections for sender, power, and ground. The analog display gives real-time feedback — helping you catch low oil-pressure conditions before they lead to engine damage.

859689 oil gauge works well as a replacement for a missing or failed gauge, or as part of a renovation or re-rigging project. It offers the reliability of a genuine Mercury-spec instrument, without requiring a full gauge-panel replacement. It’s ideal for boat owners who want to maintain engine health, restore dashboard instrumentation, or simply replace worn-out components with quality parts.

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