Mercury – Water Pressure Gauge | Dual Scale | Gray Face | 2-1/8" (52 mm) | 79-8M0065976

Overview

The Mercury Water Pressure Gauge (79-8M0065976) helps you monitor your engine’s cooling system at a glance, ensuring proper water flow and safe operating temperatures. The dual-scale display reads in both PSI and Bar, so you can view readings in English or Metric units. It features a gray face, crisp white numerals, and a glass lens for clear visibility in all conditions. Built to fit a standard 2-1/8" (52 mm) dash opening, this OEM gauge integrates seamlessly with SmartCraft-equipped systems that have water pressure sensors installed.

Key Features

• Dual-Scale Display (PSI / Bar) – Shows cooling system water pressure in both English and Metric units.
• Gray Face & Glass Lens – Clean, high-contrast design for clear, easy reading.
• Standard 2-1/8" (52 mm) Fit – Simple drop-in installation for most dashboards or helm panels.
• SmartCraft Integration – Works with Mercury systems equipped with water pressure sensors.
• Accurate Monitoring – Helps verify proper cooling pressure at idle and high speeds.
• Marine-Grade Durability – UV-stable, corrosion-resistant, and vibration-tested for long-term reliability.
• OEM Fit & Finish – Matches other Mercury gray-face gauges for a cohesive factory-style look.

Compatibility

• Fits: Mercury SmartCraft-equipped boats (functionality depends on engine model and installed sensors)

Performance & Practical Benefits

This gauge provides the vital information you need to protect your engine from overheating or low water pressure. It delivers quick, accurate readings and helps you confirm your cooling system is working properly. The gray face design adds a modern, professional touch to your dash and blends perfectly with other Mercury instruments.

Why Buy OEM

Mercury’s OEM gauges are built to the same standards as their engines — accurate, durable, and marine-tested. Each one is vibration-checked, saltwater-rated, and designed for years of dependable service. With genuine Mercury parts, you get the right fit, seamless SmartCraft communication, and proven reliability on the water.

FAQ

Q1: What pressure range does this gauge display?
It reads water pressure in PSI and Bar on a dual-scale display.

Q2: What dash hole does it fit?
A standard 2-1/8" (52 mm) gauge opening.

Q3: Does it work with all Mercury engines?
It’s compatible with SmartCraft-capable engines equipped with water pressure sensors.

Q4: Can I install it myself?
Yes — it installs easily using standard Mercury SmartCraft wiring.

Q5: Is this a genuine Mercury part?
Yes — it’s a factory Mercury Marine gauge, built to OEM specifications.