Mercury – SC1000 Single Gauge Kit | 80 MPH Speedometer | Black Face | Includes Harness | 79-8M0137551

Overview

The Mercury SC1000 Single Gauge Kit (79-8M0137551) includes everything you need to add or replace a speedometer in your SmartCraft-equipped boat. This kit comes with an 80 MPH SC1000 speedometer (black face, glass lens) and the correct SmartCraft harness, making installation simple and clean. It provides accurate, real-time speed readings while keeping that factory Mercury look and feel.

Key Features

• Complete Kit – Includes SC1000 80 MPH speedometer and SmartCraft harness.
• Black Face with Glass Lens – Sleek, easy-to-read design that matches factory Mercury gauges.
• SmartCraft Integration – Delivers precise, real-time speed data straight from your system.
• Standard 85 mm (3-3/8 in.) Fit – Easy install into existing dash openings.
• Plug-and-Play Harness – Simplifies setup for quick, secure connection.
• SmartTow Support – Works with both RPM- and speed-based SmartTow (on compatible engines).
• Durable Marine Build – UV-resistant housing and corrosion-proof internals.
• Version 9.0+ Compatibility – Adds Active Trim, Active Exhaust, and Oil Level Status.

Compatibility

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

Performance & Practical Benefits

This kit makes installing or replacing a speedometer straightforward — no hunting for parts or custom wiring. The included SmartCraft harness ensures proper connection and data transfer, while the SC1000 speedometer delivers accurate, smooth readings up to 80 MPH. It’s an easy, factory-quality upgrade for single-engine boats that value reliability and clean rigging.

Why Buy OEM

Mercury builds its gauges and harnesses to perform together perfectly. The fit, wiring, and calibration are all factory-spec, ensuring your SmartCraft system communicates clearly and accurately. OEM means fewer headaches, perfect integration, and long-lasting performance you can trust.

FAQ

Q1: What’s included in this kit?
An 80 MPH SC1000 speedometer (black face, glass lens) and a SmartCraft harness.

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

Q3: Is this compatible with SmartTow?
Yes — supports both RPM- and speed-based SmartTow modes on supported engines.

Q4: What added features come with version 9.0 and newer?
Active Trim, Active Exhaust, and Oil Level Status (where available).

Q5: Is this a genuine Mercury kit?
Yes — it’s a factory Mercury OEM kit, built and tested for SmartCraft systems.