Mercury – Voltage Gauge | Gray Face | 2-1/8" (52 mm) | 79-8M0065963

Overview

The Mercury Voltage Gauge (79-8M0065963) lets you monitor your boat’s charging system and battery health at a glance. It’s designed with a clean gray face, bold white markings, and a glass lens for easy reading in any light. Built to fit a standard 2-1/8" (52 mm) dash opening, this gauge ties seamlessly into your SmartCraft-capable system when the proper voltage sensors are available. It’s reliable, easy to install, and designed to match Mercury’s OEM gray-face gauge lineup.

Key Features

• Voltage Monitoring – Displays system voltage to track battery charge and alternator performance.
• Gray Face & Glass Lens – Modern, high-contrast appearance for easy readability.
• Standard 2-1/8" (52 mm) Fit – Installs quickly in most dash panels or consoles.
• SmartCraft-Compatible – Works with Mercury systems that include voltage sensors.
• Accurate Readings – Provides real-time data on your boat’s 12V system.
• Marine-Grade Build – UV-stable, corrosion-resistant, and vibration-tested for long life.
• OEM Quality – Matches Mercury’s gray-face gauge family for a uniform, factory look.

Compatibility

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

Performance & Practical Benefits

This voltage gauge makes it easy to keep tabs on your electrical system. It helps you confirm that your alternator is charging properly and your batteries are holding voltage where they should. The gray face adds a sleek, factory-style touch to your dash while providing the accuracy and reliability Mercury is known for.

Why Buy OEM

Mercury builds its gauges to handle the same conditions as its engines — heat, vibration, and saltwater exposure. Every OEM gauge is tested for precision and durability. With genuine Mercury equipment, you get an exact fit, accurate readings, and long-lasting reliability that integrates perfectly with your SmartCraft system.

FAQ

Q1: What does this gauge display?
It shows your boat’s electrical system voltage in real time.

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

Q3: Will it work with all Mercury engines?
It’s designed for SmartCraft-equipped engines that include voltage sensors.

Q4: Is installation easy?
Yes — it installs like other Mercury gauges with standard SmartCraft wiring.

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