Description
The Speedhut 2-5/8″ 100-500F Cylinder Head Temp Gauge (L25-CT1-LEG) is designed to provide accurate and reliable monitoring of your engine’s cylinder head temperature. Operating within a range of 100 to 500 degrees Fahrenheit, this gauge helps ensure your air-cooled engine remains within safe thermal limits to prevent overheating and potential engine damage. It features a precise K-type thermocouple probe with a durable 9-foot braided steel line for dependable temperature sensing. The included mounting ring and LED-lit power and lighting harness make installation quick and straightforward.
KEY FEATURES AND BENEFITS:
- Accurate Monitoring: Provides precise real-time readings of your engine’s cylinder head temperature from 100°F to 500°F.
- K-Type Thermocouple Sensor: Delivers reliable temperature measurement under demanding conditions.
- Durable Construction: Features a 9-foot braided steel cable for added durability and protection against engine heat and abrasion.
- Complete Installation Kit: Includes a 14mm cylinder head temperature probe, mounting ring, and a 3 ft power and lighting harness for LED illumination.
- Easy to Read: The 2 5/8 inch display offers excellent readability, supported by LED backlighting for night visibility.
- Secure Fit: Designed for a 2.67-inch (68mm) gauge hole and mounts easily with the included ring.
SPECIFICATIONS:
- Gauge Type: Temperature Gauge
- Gauge Subtype: Cylinder Head Temperature Gauge
- Range: 100-500 F
- Size: 2 5/8 inch
- Hole Size: 2.67 inches (68mm)
- Standard or Metric: Standard
- Warning Light: No
- Temp Sender Type: K Type Thermocouple Temp Probe
- Temp Probe Length: 9 feet
- Temp Probe Construction: Braided steel line
- Temp Probe Fitting: 14mm
- Included: Cylinder Head (14mm) Type K Probe (9′ long, Braided steel line), 3 ft Power & Lighting Harness, Gauge Mounting Ring
HOW TO USE:
- Mount the Gauge: Locate a 2.67-inch (68mm) diameter opening and use the included mounting ring to secure the gauge in place.
- Install the Temperature Probe: Thread the 14mm fitting of the K-type thermocouple probe into a designated port on the cylinder head or under a spark plug.
- Route the Probe Cable: Carefully guide the 9-foot braided steel cable away from high heat or moving parts to the gauge location.
- Connect the Wiring Harness: Use the 3-foot power and lighting harness to connect the gauge to a suitable 12V power source, enabling both operation and LED illumination.
- Verify Operation: Start your engine and ensure the gauge displays a temperature reading and the LED backlighting functions correctly.
BENEFITS OF USING THE SPEEDHUT 2-5/8″ 100-500F CYLINDER HEAD TEMP GAUGE (L25-CT1-LEG):
- Helps prevent engine overheating by providing real-time temperature data.
- Improves engine longevity through early detection of abnormal thermal conditions.
- Offers clear visibility of temperature readings under any lighting conditions with LED illumination.
- Ensures dependable performance thanks to high-quality materials and construction.
- Simplifies installation with included mounting and wiring components.
FEATURES:
- Real-time monitoring of cylinder head temperature for improved engine management.
- Precise temperature sensing with K-type thermocouple probe.
- Durable 9-foot braided steel cable for safe and protected routing.
- 14mm threaded fitting for easy probe installation.
- LED backlighting enhances readability in low-light conditions.
- Standard 2.67-inch (68mm) mounting hole compatibility.
- Includes mounting ring for stable, secure installation.
- Comes with a 3-foot power and lighting harness.






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