Description
The Speedhut 3-3/8″ Water Temp / Fuel Level Gauge (top/bot) (L3-DG3-LEG) offers a space-saving and efficient way to monitor two key vehicle functions—engine coolant temperature and fuel level. By consolidating these two vital readings into a single gauge, it provides clear and immediate data that helps drivers manage both engine health and fuel usage. Its compact 3-3/8″ design fits standard dashboard openings, and the included sensors and wiring harnesses simplify the installation process, making it a practical choice for any vehicle upgrade.
KEY FEATURES AND BENEFITS:
- Dual Function Gauge: Monitors both water temperature and fuel level in one device.
- Space-Saving Design: 3-3/8″ (85mm) size fits standard dashboard openings.
- Temperature Range: Displays coolant temperature from 120°F to 260°F.
- Fuel Level Scale: Clearly marked from Empty (E) to Full (F).
- Inclusive Package: Ships with wiring harnesses and a Speedhut temperature sensor for simplified installation.
- LED Backlighting: Enhances readability in low-light or nighttime driving conditions.
SPECIFICATIONS:
- Gauge Type: Dual Gauge
- Combo Options: Water Temperature and Fuel Level
- Water Temperature Range: 120-260 °F
- Fuel Level Range: E-F
- Size: 3 3/8 inch
- Hole Size: 3.33″ (85mm)
- Warning Light: No
- Ships With:
- Temperature Gauge Wiring Harness (2-Wire Cable)
- 3 ft Power & Lighting Harness – for LED Lit Gauges and Clocks
- Speedhut Temperature Sensor
- Wiring Harness (2-Wire Cable) for Fuel Level
HOW TO USE:
- Mount the Gauge: Insert the gauge into a 3.33″ (85mm) opening on your dashboard and secure it.
- Connect the Power and Lighting Harness: Attach the 3 ft harness to the gauge and connect wires to 12V power, ground, and optional backlight circuit.
- Install the Temperature Sensor: Insert the included sensor into an appropriate port in your engine’s cooling system and seal properly.
- Connect the Temperature Sensor Wiring: Link the 2-wire harness from the sensor to the back of the gauge.
- Connect the Fuel Level Wiring: Connect the 2-wire harness to the fuel level sender’s signal wire and ground, then to the gauge terminal.
- Verify Connections: Ensure all connections are secure and properly insulated.
- Test the Gauge: Turn on the ignition and check if readings for both water temperature and fuel level are functional.
BENEFITS OF USING THE SPEEDHUT 3-3/8″ WATER TEMP / FUEL LEVEL GAUGE (TOP/BOT) (L3-DG3-LEG):
- Combines two essential readings into one device, reducing dashboard clutter.
- Simplifies vehicle monitoring by providing real-time feedback on coolant temperature and fuel level.
- Includes everything needed for installation—ideal for DIY users and professionals.
- Helps prevent engine overheating and unexpected fuel depletion.
- LED backlighting ensures visibility during all driving conditions.
FEATURES:
- Compact 3-3/8″ gauge with dual readouts for water temperature and fuel level.
- Displays temperature range of 120–260°F and standard E–F fuel scale.
- Designed to fit 3.33″ (85mm) dashboard openings.
- Features LED backlighting for nighttime visibility.
- Comes with a dedicated 2-wire harness for the temperature sensor.
- Includes 3 ft power and lighting harness for easy electrical integration.
- Ships with a Speedhut temperature sensor for accurate readings.
- Provides 2-wire harness for connection to the vehicle’s fuel level sending unit.





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