SREUOIL 2" (52mm) Mechanical Water Temperature Gauge 110–265°F — 12V, 1/2" NPT Sensor, Yellow LED

The SREUOIL 2" (52mm) mechanical water temperature gauge displays engine coolant temperature from 110–265°F (40–130°C) using a 1/2" NPT temperature sensor and a 1.8m wired connection for 12V systems.

This compact, mechanical gauge provides a straightforward way to monitor your vehicle's cooling system. Built for 12V applications, it combines clear analog readout with a yellow LED dial light for low-light visibility. The gauge is compatible with cars, motorcycles, boats and a wide range of other vehicles that use automotive coolant monitoring. Its 52mm bezel fits standard dash openings and the included 1/2" NPT sensor simplifies plumbing into most coolant paths.

How accurate and responsive is the SREUOIL gauge?

The gauge uses a mechanical sensor with a reliable temperature range of 110–265°F (40–130°C), designed for engine coolant monitoring. It reacts to temperature changes quickly enough for normal driving conditions and gives a continuous analog needle response instead of digital stepping.

• Measuring range: 110–265°F (40–130°C)
• Analog needle for continuous readout
• High sensitivity suitable for automotive coolant systems
• 1/2" NPT threaded sensor for secure installation

What electrical and connection requirements should I know?

This gauge is designed for 12V DC systems and draws minimal current (max 0.3A). The sensor attaches via a 1/2" NPT thread while the instrument body includes a 1.8 meter (about 6 feet) lead to reach common dash wiring harnesses.

• Power: 12V DC, max 0.3A
• Sensor thread: 1/2" NPT for coolant ports or adapter fittings
• Cable length: 1.8 meters for flexible mounting locations
• Fitment: compatible with most 12V vehicles, boats and off-road machines

How easy is the gauge to read and install in everyday use?

The 52mm dial features clear numeric markings and a contrasting pointer for quick glances while driving. A built-in yellow LED backlight improves nighttime readability; installation requires a standard 2" dash opening and basic plumbing to the coolant line using the 1/2" NPT sensor.

• Dial size: 2" (52mm) standard mounting bezel
• Yellow LED lighting for low-light visibility
• Simple mechanical hookup—no programming required
• Ideal for OEM-style or aftermarket dash panels

What vehicles and situations is this gauge best suited for?

Because it runs on 12V and uses a robust mechanical sensor, this gauge fits a wide variety of vehicles from commuter cars to marine craft. It’s useful for anyone wanting continuous coolant temperature feedback without relying on factory digital readouts.

• Works with cars, motorcycles, ATVs, SUVs, trucks, tractors
• Also suitable for boats, RVs, caravans and industrial engines
• Good for custom dashboards, restorations and performance monitoring
• Compact size fits common dash cutouts for straightforward replacement

Who is this for: The SREUOIL 2" mechanical water temperature gauge is intended for drivers, riders and technicians who want an affordable, reliable analog coolant temperature indicator. It’s especially useful for owners of older vehicles, custom builds or aftermarket dashboards that need a compact 52mm gauge with simple electrical and plumbing requirements. If you want continuous, easy-to-read temperature feedback with minimal setup, this gauge is a practical choice.