Mercury – Water Pressure Gauge 0–30 PSI | Cooling System Monitoring | Black Face | Chrome Bezel | 79-8M6020007

Overview
This 0–30 PSI water-pressure gauge gives you a steady, no-nonsense read on how well the engine is pulling water. The needle settles in with a smooth, slow sweep, so you can spot real pressure changes without fighting jitter from wakes or chop. Out on the water, it turns into a quick habit—glance, register the number, and stay focused on the run. It’s a simple, practical gauge that helps you stay ahead of cooling-system issues.

Key Features
    • 0–30 PSI Scale – Covers the pressure range most outboards run in.
    • Smooth Needle Movement – Stays steady through bumps, turns, and throttle changes.
    • Standard Dash Fit – Drops neatly into common dash openings.
    • Backlit Face – Easy to read when light gets low.
    • Marine-Durable Build – Handles spray, vibration, and everyday conditions.

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

Performance & Practical Benefits
On the water, this gauge helps you notice pressure drops early—whether from weeds, shallow running, or debris at the intakes. The calm needle sweep makes changes easy to spot at a glance, so you’re not guessing whether the engine’s getting the water it needs. It works just as well while cruising as it does at idle. Before long, it becomes part of your normal check-in while running.

Why Buy OEM
OEM gauges follow Mercury’s pressure-signal pattern the way they’re supposed to, so the reading stays steady and accurate. They hold up better to heat, movement, and weather than bargain replacements. Most boaters stick with OEM simply because cooling-system info is something you want to trust.

FAQ
1. How do I know if the water-pressure gauge is going bad?
If the needle hangs up, barely moves, or jumps for no clear reason, it’s likely starting to fail.

2. Does this gauge need calibration?
Most rigs read correctly right away—just make sure the pressure line is routed cleanly.

3. How does it handle saltwater?
A quick rinse after each run helps it stay reliable through long saltwater seasons.

4. Anything important during installation?
Avoid kinks or tight bends in the pressure line so the gauge can react smoothly.

5. What does low pressure usually look like underway?
The needle drops toward the low side and stays there, often before the engine alarms.