Mercury – Speedometer 45 MPH | Boat Speed Monitoring | Black Face | Chrome Bezel | 79-8M6020003

Overview
This 45-MPH speedometer gives you a straight, steady read on how the boat’s moving. The needle doesn’t twitch when you hit a little chop—it eases into place and stays there. Out on the water, it feels like one of those gauges you check without thinking: glance, get your number, and keep going. It’s simple, clean, and does exactly what you need it to do.

Key Features
    • 45-MPH Scale – Lays out speed on a clear, easy-to-follow arc.
    • Smooth Needle Sweep – Stays calm through bumps, turns, and throttle shifts.
    • Standard Dash Fit – Drops into common dash openings with no extra trouble.
    • Backlit Display – Easy to see when light gets low.
    • Marine-Durable Build – Built to handle spray, vibration, and day-to-day use.

Engine & Boat Compatibility
    • FourStroke outboards
    • Verado series
    • Pro XS engines
    • SmartCraft systems

Performance & Practical Benefits
On the water, the gauge makes it easy to settle into a pace that feels right. The steady sweep helps you see small changes without staring at the panel, and it doesn’t wander when the hull shifts. Whether you’re cruising a long stretch or easing back into a no-wake zone, the reading feels predictable. It becomes one of those quiet tools that keeps everything feeling balanced.

Why Buy OEM
OEM gauges follow Mercury’s signal pattern properly, which keeps the numbers honest. They hold up better to real-world vibration, heat, and weather than cheaper versions. Most boaters stick with OEM because it means fewer surprises later on.

FAQ
1. What are signs the speedometer is wearing out?
If the needle hesitates, sticks, or drops out randomly, it’s usually fading.

2. Does the gauge need calibration?
Most rigs read fine right away, but checking settings during install is always a smart step.

3. How does it handle saltwater?
A quick rinse after each run goes a long way in keeping it healthy.

4. Anything important during installation?
Clean, tight signal and power connections help the needle stay smooth.

5. What does failing behavior look like?
You might see drifting numbers, slow reaction, or readings that don’t match how the boat feels.