Description
The Speedhut 3-3/8″ BMW WatTemp/Volt/Oil PSI/Fuel Level Gauge (R3-QG2-BMW) is a comprehensive instrument designed to provide BMW drivers with a clear and concise overview of their vehicle’s most critical operating parameters. This single, space-saving gauge integrates four essential readings: Water Temperature, Voltage, Oil Pressure, and Fuel Level. By combining these functions, it offers a streamlined dashboard aesthetic without sacrificing vital information, allowing you to monitor your engine’s health and fuel status with ease.
KEY FEATURES AND BENEFITS:
- Consolidates four crucial gauges into one, reducing dashboard clutter and simplifying the driver’s view.
- Provides real-time readings of Water Temperature ranging from 120 to 260 °F for effective engine cooling system monitoring.
- Displays Voltage from 6 to 18 volts to track electrical system performance.
- Monitors Oil Pressure from 0 to 100 psi to ensure engine lubrication awareness.
- Fuel Level indicator from Empty to Full for instant fuel status assessment.
- Built-in warning light to alert drivers of potential issues.
- Designed for a 3 3/8 inch (85mm) mounting hole compatible with various dashboards.
- Includes temperature sensor and 100 psi pressure sensor with necessary wiring harnesses.
- Remote button available upon request for easier access if gauge face buttons are hard to reach.
- Fuel level sensor must be sourced separately and operate at 300 ohms or less for compatibility.
SPECIFICATIONS:
- Gauge Type: Quad Gauge (Water Temperature, Voltage, Oil Pressure, Fuel Level)
- Voltage Range: 6-18 volts
- Water Temperature Range: 120-260 °F
- Fuel Level Range: Empty (E) to Full (F)
- Oil Pressure Range: 0-100 psi
- Size: 3 3/8 inch (85mm) diameter
- Mounting Hole Size: 3.28 inch (83mm) diameter
- Units: Standard (Fahrenheit, PSI)
- Warning Light: Yes
- Fuel Level Sensor Compatibility: 300 ohms or less (Sensor Not Included)
- Included:
- Temperature Gauge Wiring Harness (2-Wire Cable)
- Wiring Harness (2-Wire Cable)
- Speedhut Temperature Sensor
- Pressure Sensor – 100 psi
- Pressure Gauge Wiring Harness (3-Wire Cable)
- 3 ft Power & Lighting Harness – for LED Lit Gauges and Clocks
HOW TO USE:
- Installation: Mount the Speedhut Quad Gauge into a 3.28 inch (83mm) diameter hole in your BMW’s dashboard.
- Wiring – Power and Lighting: Connect the 3 ft Power & Lighting Harness to a suitable power source, ground, and lighting circuit in your vehicle.
- Wiring – Temperature Sensor: Connect the provided Speedhut Temperature Sensor to the engine’s coolant system using the Temperature Gauge Wiring Harness (2-Wire Cable).
- Wiring – Pressure Sensor: Install the included 100 psi Pressure Sensor at an appropriate port on your engine’s oil system and connect it using the Pressure Gauge Wiring Harness (3-Wire Cable).
- Wiring – Voltage: Connect the designated wires from the Wiring Harness (2-Wire Cable) to a reliable voltage reference point in your vehicle.
- Wiring – Fuel Level Sensor: Connect your separately sourced fuel level sensor (300 ohms or less) to the designated wires on the Wiring Harness (2-Wire Cable).
- Calibration/Testing: Test each function of the gauge to ensure accurate readings. Refer to Speedhut documentation for calibration procedures.
- Remote Button (Optional): If requested, install the remote button in an accessible location and connect it according to the instructions.
BENEFITS OF USING THE SPEEDHUT 3-3/8″ BMW WATTEMP/VOLT/OIL PSI/FUEL LEVEL GAUGE (R3-QG2-BMW):
- Centralizes four critical vehicle parameters in one clear display, enhancing driver awareness.
- Helps prevent costly engine damage by enabling early detection of temperature or oil pressure issues.
- Saves dashboard space for a cleaner, more organized interior.
- Provides real-time voltage monitoring for electrical system health.
- Accurate fuel level readings to avoid unexpected fuel shortages.
- Includes sensors for temperature and pressure for simplified installation.
- Remote button option adds convenience when gauge face access is limited.
FEATURES:
- Combines water temperature, voltage, oil pressure, and fuel level readings in a single 3 3/8″ unit.
- Clear and easily readable display of essential vehicle data.
- Includes a dedicated warning light for immediate alerts.
- Designed for a standard 3 3/8 inch (85mm) mounting hole.
- Voltage monitoring range of 6 to 18 volts.
- Water temperature range of 120 to 260 °F.
- Oil pressure range from 0 to 100 psi.
- Fuel level displayed from empty to full.
- Comes with Speedhut temperature sensor and 100 psi pressure sensor.
- Includes all necessary wiring harnesses for temperature, pressure, power, and lighting.
- Optional remote button available for easier gauge control access.
- Compatible with fuel level sensors operating at 300 ohms or less (sensor not included).





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