Description
The Speedhut 3-3/8″ Water Temp/Volt/Oil PSI/Fuel Quad Gauge (R3-QG2-LEG) is a comprehensive instrument designed to provide drivers with a clear and concise overview of their vehicle’s most critical operating parameters. This single, space-saving gauge integrates four essential monitoring functions into one stylish and easy-to-read unit. By combining water temperature, voltage, oil pressure, and fuel level displays, this quad gauge streamlines your dashboard while ensuring you have immediate access to the information necessary for maintaining optimal vehicle performance and preventing potential issues. Built with precision and user convenience in mind, the Speedhut quad gauge is an ideal upgrade for anyone looking to enhance their vehicle’s instrumentation without sacrificing valuable dashboard space.
KEY FEATURES AND BENEFITS:
- Multi-functional monitoring: Combines four essential gauges—water temperature, volts, oil pressure, and fuel level—into one unit.
- Space efficiency: Saves dashboard space with its 3-3/8″ compact design.
- Real-time feedback: Offers accurate monitoring of engine and electrical systems for timely maintenance.
- Broad fuel level sensor compatibility: Works with most sensors up to 300 ohms (sensor not included).
- Included sensors: Comes with Speedhut temperature sensor and 100 psi oil pressure sensor.
- Integrated warning light: Alerts for low voltage, overheating, or oil pressure issues.
- Easy installation: Standard 3.28″ mounting and all necessary wiring harnesses included.
SPECIFICATIONS:
- Gauge Type: Quad Gauge (Water Temperature, Volts, Oil Pressure, Fuel Level)
- Size: 3-3/8 inch (86mm)
- Hole Size: 3.28 inches (83mm)
- Voltage Range: 6-18 volts
- Water Temperature Range: 120-260 °F
- Oil Pressure Range: 0-100 psi
- Fuel Level Compatibility: Sensors with resistance of 300 ohms or less (sensor not included)
- Included:
- Pressure Sensor – 100 psi
- Speedhut Temperature Sensor
- Temperature Gauge Wiring Harness (2-Wire Cable)
- Pressure Gauge Wiring Harness (3-Wire Cable)
- Wiring Harness (2-Wire Cable)
- 3 ft Power & Lighting Harness – for LED Lit Gauges and Clocks
HOW TO USE:
- Mount the Gauge: Insert the gauge into a 3.28″ (83mm) dashboard opening and secure it in place.
- Connect the Power and Lighting Harness: Attach the 3 ft harness to the gauge, connecting power to a 12V ignition source, ground to a chassis ground, and lighting to the vehicle’s lighting circuit.
- Install the Temperature Sensor: Mount the sensor into a coolant passage and connect via the 2-wire harness.
- Install the Pressure Sensor: Install in the oil system and connect using the 3-wire harness.
- Connect the Voltage Input: Wire the voltage input to a 12V source.
- Connect the Fuel Level Signal Wire: Attach to your fuel sender (≤300 ohms) using the 2-wire harness.
- Test the Gauge: Start your vehicle and verify the readings and warning light functionality.
BENEFITS OF USING THE SPEEDHUT 3-3/8″ WATER TEMP/VOLT/OIL PSI/FUEL QUAD GAUGE (R3-QG2-LEG):
- Centralized monitoring: Displays four vital metrics in one view for easy tracking and diagnosis.
- Engine safety: Tracks water temperature to prevent overheating.
- Electrical health: Monitors system voltage to avoid battery issues.
- Lubrication protection: Detects oil pressure drops that could harm the engine.
- Fuel awareness: Prevents unexpected fuel shortages with real-time fuel level data.
- Compact dashboard integration: Saves space and ensures a tidy layout.
- Simplified installation: Includes all key sensors and wiring for a plug-and-play upgrade.
FEATURES:
- Integrated four-in-one design for essential vehicle metrics.
- Clear, legible face for quick reading.
- Includes Speedhut temperature and 100 psi pressure sensors.
- Real-time voltage display (6-18V).
- Compatible with fuel sensors ≤300 ohms (sensor not included).
- Built-in warning light for critical conditions.
- Fits standard 3.28″ dash openings.
- Includes all necessary wiring harnesses.
- Maximizes dashboard space with clean, unified design.






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