Feature 1. Accurate read out in Celsius and Fahrenheit. This high-pressure radiator cap will give you real-time temperature monitoring with accurate readings in both Celsius and Fahrenheit (32-400). It has a bright color gradient meter that provides high visibility to assist you in understanding what the temperature of your engine means, and can help prevent costly engine overheating. 2. Great for performance motors and humid or muddy conditions. 3. This 1.8 High Pressure Radiator Cap with Temperature Gauge makes it easy to keep an eye on your machine temperature. 4. With a durable design and premium construction, this radiator thermometer gauge cap is built to last, and will handle all kinds of weather, and can be taken on the toughest off-roading trips. Its secure seal allows it to be used in humid, dry, hot, and dusty climates without problems to keep you informed about your engine temperature in real time. 5. Material: aluminum