Mercury – Oil Pressure Gauge | Dual Scale | Gray Face | 2-1/8" (52 mm) | 79-8M0065974

Overview

The Mercury Oil Pressure Gauge (79-8M0065974) gives you an accurate, real-time reading of your engine’s oil pressure so you can stay ahead of maintenance and protect your motor. It features a dual-scale display that shows both PSI and Bar, letting you monitor pressure in either English or Metric units. The gray face, white numerals, and glass lens provide a clean, modern look that matches the rest of Mercury’s OEM gray-face gauge line. It fits a standard 2-1/8" (52 mm) dash hole and connects to SmartCraft-capable systems when compatible sensors are present.

Key Features

• Dual-Scale Readout (PSI / Bar) – Displays oil pressure in both English and Metric units.
• Gray Face & Glass Lens – Modern, easy-to-read design that matches Mercury’s OEM look.
• Standard 2-1/8" (52 mm) Fit – Drop-in installation for most dash configurations.
• SmartCraft-Compatible – Works with Mercury systems equipped with oil pressure sensors.
• Accurate Monitoring – Provides real-time pressure feedback to ensure proper lubrication.
• Marine-Grade Build – UV-resistant, corrosion-proof, and vibration-tested for tough marine environments.
• OEM Fit & Finish – Matches other Mercury gray-face gauges for a uniform, factory appearance.

Compatibility

• Fits: Mercury SmartCraft-equipped boats (functionality depends on engine model and installed sensors)

Performance & Practical Benefits

This gauge gives you peace of mind by providing live oil pressure readings at all RPM ranges. It helps you identify changes in oil system performance before they become serious problems. The gray face adds a sleek, modern touch to your dash while ensuring perfect visibility in any light. Durable, precise, and easy to install — it’s a great fit for any SmartCraft-equipped setup.

Why Buy OEM

Mercury builds its gauges to the same high standards as its engines. Each unit is tested for vibration, heat, and salt exposure to guarantee long-term accuracy and dependability. With genuine OEM gear, you get the right fit, the right communication, and the lasting reliability that comes with Mercury Marine products.

FAQ

Q1: What pressure units does it display?
It shows oil pressure in PSI and Bar (dual-scale).

Q2: What dash hole size does it fit?
A standard 2-1/8" (52 mm) opening.

Q3: Does it work with all Mercury engines?
It’s compatible with SmartCraft-equipped engines that have oil pressure sensors.

Q4: Can I install it myself?
Yes — it installs easily like any other 2-1/8" auxiliary gauge.

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