Description
The Speedhut 2-5/8″ 40-150C Oil Temp Gauge w/ Warning (R25-OT3-REV) is a reliable instrument designed to provide precise monitoring of your engine’s oil temperature. This metric gauge offers a clear visual indication of temperature levels, helping you maintain optimal engine performance and prevent potential damage. Equipped with a user-configurable warning light, it provides an immediate alert if temperatures fall outside the safe operating range.
KEY FEATURES AND BENEFITS:
- Accurate Temperature Monitoring: Provides precise readings of oil temperature within a range of 40 to 150 degrees Celsius, crucial for engine health.
- User-Settable Warning Light: Allows you to define custom high and low temperature thresholds, providing immediate visual alerts when these limits are exceeded.
- Metric Measurement: Displays temperature readings in Celsius, the standard metric unit for temperature.
- Easy Installation: Designed with a 2 5/8 inch (67mm) diameter and requires a 2.67 inch (68mm) mounting hole for straightforward installation.
- Complete Kit: Ships with all necessary components, including the Speedhut temperature sensor and wiring harnesses, ensuring a hassle-free setup.
SPECIFICATIONS:
- Gauge Type: Temperature Gauge (Oil Temperature)
- Temp Sender Type: 2-Wire Temp Sender (Performance)
- Range: 40-150 °C
- Size: 2 5/8 inch (67mm)
- Hole Size: 2.67 inches (68mm)
- Standard or Metric: Metric
- Warning Light: Yes
- Ships With:
- Speedhut Temperature Sensor
- 3 ft Power & Lighting Harness – for LED Lit Gauges and Clocks
- Temperature Gauge Wiring Harness (2-Wire Cable)
HOW TO USE:
- Disconnect Power: Begin by disconnecting the negative terminal of your vehicle’s battery to ensure safety during installation.
- Mount the Gauge: Locate a suitable position on your dashboard or instrument panel and drill a 2.67-inch (68mm) diameter hole. Insert the gauge into the hole and secure it using the provided mounting hardware.
- Connect the Temperature Sensor: Install the included Speedhut temperature sensor in the appropriate port on your engine. Connect the 2-wire cable from the sensor to the designated terminals on the back of the gauge.
- Connect Power and Lighting: Using the 3 ft Power & Lighting Harness, connect the power wire to a switched +12V source in your vehicle, the ground wire to a suitable ground point, and the lighting wire to your vehicle’s headlight or instrument panel light circuit if you desire the gauge to illuminate with your other lights.
- Reconnect Power: Once all wiring connections are secure, reconnect the negative terminal of your vehicle’s battery.
- Set the Warning Light (Optional): With the gauge powered off, press and hold the button on the back. While holding, power the gauge on. Release the button when the warning light activates. The pointer will move; press the button at your desired low and high warning points as indicated by the pointer movement.
- Verify Operation: Start your vehicle and observe the gauge to ensure it is displaying the oil temperature correctly. Check that the warning light functions as expected when the set temperature thresholds are reached.
BENEFITS OF USING THE SPEEDHUT 2-5/8″ 40-150C OIL TEMP GAUGE W/ WARNING (R25-OT3-REV):
- Proactive Engine Protection: By closely monitoring oil temperature, you can identify potential overheating issues early, preventing costly engine damage.
- Optimized Performance: Maintaining the correct oil temperature ensures optimal lubrication and efficient engine operation.
- Enhanced Awareness: The integrated warning light provides immediate alerts, allowing you to take timely action if temperature levels become critical.
- Reliable Readings: The included performance 2-wire temperature sender ensures accurate and consistent temperature measurements.
- Easy Integration: The standard 2 5/8 inch size and included wiring simplify the installation process in a variety of vehicles.
FEATURES:
- Clear and easy-to-read display with a 40-150 degrees Celsius range.
- Integrated warning system for both high and low temperature thresholds.
- Performance-oriented 2-wire temperature sensing technology.
- Standard 2 5/8 inch (67mm) gauge size for common mounting applications.
- Requires a 2.67 inch (68mm) diameter mounting hole.
- Displays temperature in the metric unit (Celsius).
- Comes complete with the necessary temperature sensor and wiring harnesses for installation.
- Designed for reliable and accurate temperature monitoring.






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