Mercury – SC1000 Tachometer 4000 RPM | SmartCraft Analog Gauge | Black Face | 85 mm | 79-8M0135630

Overview

The Mercury SC1000 4000 RPM Tachometer (79-8M0135630) combines SmartCraft accuracy with a clean, factory look. Featuring a black face, white numerals, and a glass lens, it fits a standard 85 mm (3-3/8 in.) dash hole. This tach delivers smooth, real-time RPM readings and supports SmartTow and other SmartCraft features depending on your engine setup and sensors. It’s built for boaters who want precision, reliability, and a consistent Mercury finish across their dash.

Key Features

• 4000 RPM Analog Tachometer – Provides accurate, real-time RPM data through the SmartCraft network.
• Black Face with Glass Lens – Clear, glare-resistant view that matches other SC1000 gauges.
• 85 mm (3-3/8 in.) Dash Fit – Standard gauge size for simple installation or replacement.
• SmartTow Integration – Supports both RPM- and speed-based SmartTow functions (depends on engine).
• Version 9.0+ Compatibility – Adds Active Trim, Active Exhaust, and Oil Level Status.
• SmartCraft Ready – Connects directly to Mercury’s network for dependable communication.
• Built for Marine Life – UV-stable, corrosion-resistant, and designed for vibration-heavy environments.

Compatibility

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

Performance & Practical Benefits

This SC1000 tachometer gives you quick, accurate engine data in a clean, easy-to-read format. The black face and crisp white numerals deliver a sharp contrast that’s easy to see in full sun or low light. The 4000 RPM range makes it a great fit for cruising and workboat applications that don’t require higher rev monitoring. With SmartTow and v9.0 support, it adds advanced control and monitoring capabilities to compatible engines.

Why Buy OEM

Mercury gauges are made to last. Each SC1000 unit is tested for heat, vibration, and salt exposure to ensure performance on the water. With OEM equipment, you get the precision, fit, and reliability you’d expect from a factory Mercury install — with none of the guesswork.

FAQ

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

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

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

Q4: What features are available on version 9.0 and newer?
Active Trim, Active Exhaust, and Oil Level Status (when supported).

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