Mercury – Fuel Level 2 Gauge | Gray Face | 2-1/8" (52 mm) | 79-8M0065971

Overview

The Mercury Fuel Level 2 Gauge (79-8M0065971) provides accurate readings for your secondary fuel tank, helping you stay aware of both tanks at a glance. It features a gray face, white numerals, and a glass lens for clear visibility in all lighting conditions. The gauge fits a standard 2-1/8" (52 mm) dash opening and ties directly into SmartCraft systems that include multiple fuel level sensors. Built tough for marine environments, it’s the perfect OEM addition for boats running dual-tank setups.

Key Features

• Secondary Fuel Tank Monitoring – Designed to display fuel levels from a second tank or sender.
• Gray Face & Glass Lens – Clean, high-contrast design that matches other Mercury gray-face gauges.
• Standard 2-1/8" (52 mm) Fit – Easy drop-in installation for most dash configurations.
• SmartCraft Integration – Works with SmartCraft systems that support multiple fuel-level sensors.
• Accurate & Responsive – Provides steady, real-time readings for dependable fuel management.
• Marine-Grade Durability – UV-stable, corrosion-resistant, and vibration-tested for long-term use.
• OEM Look & Fit – Matches Mercury’s gray-face gauge family for a consistent factory appearance.

Compatibility

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

Performance & Practical Benefits

This gauge helps you track both tanks with confidence, so you’ll always know how much fuel you have on board. Whether you’re running long trips offshore or managing auxiliary tanks, the Fuel Level 2 Gauge provides the accurate data you need. The gray face design complements your helm’s modern look while maintaining Mercury’s trademark durability and precision.

Why Buy OEM

Mercury Marine gauges are built for real-world conditions — from pounding waves to salt spray and constant vibration. Each unit is factory-tested for accuracy and durability. With OEM parts, you get the right fit, the right look, and the reliability that comes with true SmartCraft integration.

FAQ

Q1: What does this gauge monitor?
It displays the fuel level in a secondary tank, depending on connected SmartCraft sensors.

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

Q3: Is it compatible with all Mercury engines?
It works with SmartCraft-capable engines equipped for dual-tank monitoring.

Q4: How hard is it to install?
It installs just like other Mercury 2-1/8" auxiliary gauges and connects via SmartCraft wiring.

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