Universal Thermo Thermostatic Radiator Cap Cover with Water Temperature Gauge This radiator is designed with water temperature gauge, which shows whether it is the temperature to open the radiator . It is easy to install. Just take the old out, and bolt on this new one. Universal Thermo Thermostatic Radiator Cap Cover with Water Temperature Gauge: Combines a radiator with a temperature gauge.Direct bolt-on installation.Measure coolant temperature to tell if it is to open the radiator .Made of billet aluminum material for strength and durability.With red silicone seal for better adaptation. Specifications: Pressure: 0.9BAR, 1.1BAR, 1.3BAR (Optional) Package Size: Approx. 8.7 * 8.7 * 6.6cm / 3.4 * 3.4 * 2.6in Package Weight: Approx. 88g / 3.1oz Item Weight: Approx. 60g / 2.1oz Material: Aluminum Alloy Item Size: Approx. 6.5 * 4.5 * 4.1cm / 2.6 * 1.8 * 1.6in Color: Blue Package List: 1 * Thermostatic Radiator