Mercury – SC1000 Tachometer 4000 RPM | SmartCraft Analog Gauge | Gray Face | 85 mm | 79-8M0135644

Overview

The Mercury SC1000 4000 RPM Tachometer (79-8M0135644) delivers reliable, real-time engine data with a clean, gray-face design that gives any dash a modern look. It fits a standard 85 mm (3-3/8 in.) gauge opening and connects directly to your SmartCraft network for smooth, accurate RPM readings. Built tough for marine conditions, it’s easy to read, simple to install, and fully compatible with SmartTow and advanced SmartCraft features on supported engines.

Key Features

• 4000 RPM Analog Tachometer – Tracks engine speed accurately through the SmartCraft system.
• Gray Face & Glass Lens – Bright, modern look that’s easy to read in any lighting.
• 85 mm (3-3/8 in.) Dash Fit – Standard size for easy replacement or new installs.
• SmartTow Support – Works with both RPM- and speed-based SmartTow modes (depends on engine).
• Version 9.0+ Compatibility – Adds Active Trim, Active Exhaust, and Oil Level Status when supported.
• SmartCraft Integration – Connects directly to your Mercury digital network.
• Built for Marine Use – UV-stable face, corrosion-resistant internals, and vibration-tested housing.

Compatibility

• Fits: Mercury SmartCraft-equipped boats using SC1000-series gauges

Performance & Practical Benefits

This SC1000 tachometer combines clean design with dependable SmartCraft accuracy. The gray face and white markings make it easy to read at a glance, while the 4000 RPM range makes it a solid fit for cruising, workboat, or lower-RPM applications. With SmartTow functionality and v9.0 software compatibility, you get advanced monitoring and control features without sacrificing that simple, analog feel.

Why Buy OEM

Mercury’s SC1000 gauges are built to the same standards as their engines — precise, durable, and designed for the marine environment. Every component is factory-tested for heat, vibration, and corrosion. When you choose OEM, you get perfect fit, SmartCraft accuracy, and years of dependable performance.

FAQ

Q1: What’s the RPM range?
Up to 4000 RPM.

Q2: What dash hole size does it fit?
Standard 85 mm (3-3/8 in.) opening.

Q3: Does it include SmartTow support?
Yes — both RPM- and speed-based SmartTow are supported.

Q4: What features are available on version 9.0 and newer?
Active Trim, Active Exhaust, and Oil Level Status on compatible engines.

Q5: Is this an OEM gauge?
Yes — it’s a genuine Mercury Marine SC1000 tachometer, built to factory specifications.