Mercury – Rudder Angle Gauge | Black Face | 2-1/8" (52 mm) | 79-8M0052851

Overview

The Mercury Rudder Angle Gauge (79-8M0052851) shows your rudder position at a glance, giving you better steering awareness and control. Whether you’re docking, running narrow channels, or handling a large inboard, this gauge lets you know exactly where your rudder is pointed. The black face, bold white markings, and glass lens offer clear visibility in any lighting, and the standard 2-1/8" (52 mm) fit makes it easy to install. Designed for SmartCraft-capable systems with rudder sensors, it’s durable, accurate, and built to last.

Key Features

• Rudder Angle Display – Shows real-time rudder position for precise steering control.
• Black Face & Glass Lens – Clean, high-contrast design for easy viewing.
• Standard 2-1/8" (52 mm) Fit – Installs easily into most helm panels or dashboards.
• SmartCraft-Ready – Works with Mercury systems equipped with rudder position sensors.
• Accurate Feedback – Provides smooth, responsive movement for confident control.
• Marine-Grade Construction – UV-resistant, corrosion-proof, and built for heavy use.
• OEM Styling – Matches Mercury’s black-face gauge lineup for a consistent dash appearance.

Compatibility

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

Performance & Practical Benefits

This gauge takes the guesswork out of steering — especially on larger vessels or when docking. By displaying rudder position in real time, it helps you make smoother corrections and maintain better control. The black face pairs perfectly with the rest of your Mercury gauge set, giving your dash a professional, finished look while adding real-world functionality.

Why Buy OEM

Mercury builds its gauges to perform under the same demanding conditions as its engines. Each gauge is tested for salt exposure, vibration, and long-term accuracy. With genuine Mercury OEM parts, you get precise data, the right fit, and reliable performance for seasons to come.

FAQ

Q1: What does this gauge show?
It displays your rudder’s position or angle relative to the centerline.

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

Q3: Does it work with any Mercury engine?
It’s compatible with SmartCraft-equipped boats that have rudder angle sensors.

Q4: Can I install it myself?
Yes — it installs like any other Mercury 2-1/8" auxiliary gauge using SmartCraft wiring.

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