●[With Water Temperature Gauge] This large head 1.1 bar water tank cover allows you to accurately monitor the temperature of the water tank without starting the engine using a built-in water temperature gauge. ●[Easy to install] Plug and play design, just unscrew the old water tank cap and replace it with a new one to complete the installation without tools or complicated modifications. ●[Increased Boiling Point] Increases the boiling point of the coolant and prevents the formation of water bubbles, providing efficient cooling system performance even at high temperatures. ●[Enhanced Heat Resistance] Silicone inner seal provides better heat resistance and improves the sealing of the radiator cap, preventing coolant leakage and maintaining pressure. ●[Universal Fitment] This product is specially designed to fit most car radiator caps, compatible with many car models.