Mercury – Water Pressure Gauge 0–30 PSI | Cooling System Monitoring | White Face | Chrome Bezel | 79-8M6020019

Overview
This 0–30 PSI water-pressure gauge gives you a clear, steady read on how well the engine is pulling water through the cooling system. The needle settles with a smooth, even swing, so real changes stand out without getting lost in bumps or chop. Out on the water, it turns into a quick habit—glance, confirm, and keep moving. It’s a simple, clean gauge that helps you stay ahead of cooling issues.

Key Features
    • 0–30 PSI Scale – Covers the cooling-system pressure range most outboards run in.
    • Smooth Needle Sweep – Holds steady through chop, turns, and throttle changes.
    • Standard Dash Fit – Drops neatly into common dash cutouts.
    • Backlit Face – Easy to read in low-light conditions.
    • Marine-Durable Build – Handles spray, vibration, and daily use on the water.

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

Performance & Practical Benefits
On the water, this gauge helps you spot pressure drops early—whether from weeds, shallow running, or debris at the intakes. The calm sweep makes any change easy to notice with just a glance. It’s useful at idle, in mid-cruise, or when running harder water. It becomes one of those quiet checks that keeps the engine safe.

Why Buy OEM
OEM gauges read Mercury’s pressure-signal pattern exactly, so the number you see is dependable. They hold up well to vibration, heat, and weather—things that often wear cheaper gauges down. Most boaters pick OEM because it keeps cooling-system info consistent season after season.

FAQ
1. How do I know if the water-pressure gauge is failing?
If the needle sticks, drifts, or barely moves, the gauge is likely wearing out.

2. Does this gauge need calibration?
Most setups read correctly immediately, but ensuring the pressure line is clean and unkinked is smart.

3. How does it handle saltwater?
A quick rinse after your run helps it last through saltwater seasons.

4. Anything important during installation?
Make sure the pressure line isn’t pinched or restricted so the needle can react smoothly.

5. What does low pressure look like underway?
The needle will sit low and stay there, often before alarms or other signs show up.