Description
The Speedhut 3-3/8″ Oil Temp / Oil Pressure Dual Gauge (R3-DG6-LEG) is a practical instrument designed to provide essential engine monitoring in a clear and efficient manner. This dual-function gauge allows you to simultaneously track both your engine’s oil temperature and oil pressure, offering valuable insights into its operational health. Its classic design ensures it integrates well with a variety of vehicle interiors.
KEY FEATURES AND BENEFITS:
- Dual Display: Shows both oil temperature (100–300 °F) and oil pressure (0–100 psi) on one gauge.
- Compact Size: Fits standard 3-3/8 inch (86mm) gauge openings.
- Warning Light: Built-in LED warning alerts for critical temperature or pressure levels.
- Complete Installation Kit: Includes Speedhut temperature and pressure sensors, wiring harnesses, and mounting ring.
- Efficient Integration: Designed to suit a wide range of vehicle dashboards with classic styling.
SPECIFICATIONS:
- Gauge Type: Dual Gauge
- Combo Options: Oil Temperature and Oil Pressure
- Oil Temperature Range: 100-300 °F
- Oil Pressure Range: 0-100 psi
- Units: Standard (Fahrenheit and PSI)
- Size: 3 3/8 inch (86mm)
- Hole Size: 3.375 inches (86mm)
- Warning Light: Yes
- Included: 3 ft Power & Lighting Harness, Pressure Gauge Wiring Harness (3-Wire Cable), Temperature Gauge Wiring Harness (2-Wire Cable), Speedhut Temperature Sensor, Pressure Sensor – 100 psi, Gauge Mounting Ring
HOW TO USE:
- Mount the Gauge: Find a 3.375″ (86mm) opening in your dashboard. Insert the gauge and secure it with the included mounting ring.
- Connect the Power and Lighting Harness: Use the 3 ft harness to connect the gauge to your vehicle’s power source and lighting circuit following instructions.
- Install the Pressure Sensor: Locate the appropriate port on your engine and install the 100 psi pressure sensor.
- Connect the Pressure Sensor Wiring Harness: Attach the 3-wire cable to the sensor and gauge, ensuring proper wiring as per the manual.
- Install the Temperature Sensor: Insert the Speedhut temperature sensor into an oil system port suitable for temperature measurement.
- Connect the Temperature Sensor Wiring Harness: Link the 2-wire harness from the sensor to the gauge, confirming correct connections.
- Verify Functionality: Start your vehicle and check both temperature and pressure readings. Confirm the warning light works as intended.
BENEFITS OF USING THE SPEEDHUT 3-3/8″ OIL TEMP / OIL PRESSURE DUAL GAUGE (R3-DG6-LEG):
- Dual Parameter Monitoring: Allows real-time observation of oil temperature and pressure in one glance.
- Enhanced Engine Protection: Quickly identifies abnormal conditions to help prevent engine damage.
- All-Inclusive Installation: Comes with sensors and harnesses for a hassle-free setup.
- Classic Design: Complements most vehicle interiors with a timeless look.
- Engine Health Awareness: Promotes informed vehicle maintenance and may prolong engine lifespan.
FEATURES:
- Dual functionality displays both oil temperature and pressure in a single, space-saving unit.
- Integrated warning system alerts you to critical readings.
- Includes complete wiring harnesses for power, lighting, and sensors.
- Comes with a Speedhut temperature sensor and a 100 psi pressure sensor for accurate data.
- Straightforward mounting with included spin-lock ring for standard 3-3/8″ gauge holes.





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