High-quality materialsThe thermostatic radiator cover is made of high-quality silicone rubber, which has good sealing performance and can effectively prevent water leakage from the radiator. This is a product tallquality Professionally MadeAs the water temperature drops, a vacuum will form inside and the lid will open to draw water from the auxiliary heater into the water tank to maintain the level water balance Professional UseThe thermostatic radiator cover is professionally made and designed to adjust the pressure of the radiator and maintain the water level in the water tank Superior performance The thermostatic radiator cover is professionally manufactured, which can improve the pressure and cooling performance of the radiator, and at the same time change the appearance of the engine compartment,with superior performance Professional DesignConstant temperature radiator cover, once the discharge pressure exceeds 0.9kg, the radiator cover spring will open and the coolant will flow to the auxiliary radiator tostorage Professionally MadeAs the water temperature drops, a vacuum will form inside and the lid will open to draw water from the auxiliary heater into the water tank to maintain the level water balance High-quality materialsThe thermostatic radiator cover is made of high-quality silicone rubber, which has good sealing performance and can effectively prevent water leakage from the radiator. Feature: 1. The use of high quality silicone rubber, good sealing, can effectively prevent the radiator from leaking. 2. The radiator cover is used to adjust the pressure of the radiator and to maintain the water level of the water tank. 3. Improve radiator pressure and cooling performance while changing the look of the engine bay. 4. Thermostatic radiator cover, once the discharge pressure is over 2 lbs, the radiator cover spring will open and the coolant will flow to the auxiliary radiator for storage. 5. As the water temperature decreases, a vacuum is formed inside, the plug opens to draw water from the auxiliary heater into the water tank to keep the water level balanced. /p> Specification: Item Type: Thermostatic Radiator Cap Material: aluminum alloy + silicone rubber Color: dark blue + black Size: approx. 65 x 45mm / 2.6 x 0.8in Application: universal List of packages: 1 x thermostatic radiator cap