The radiator cap maintains the correct internal pressure as well as the coolant fluid volume in the cooling system by controlling the coolant fluid flow between the radiator and the recovery tank. The condition of the radiator cap should be checked periodically or else when there is an overheating problem in your vehicle's engine. The radiator cap has a certain pressure rating and it should not be changed arbitrarily. The cap should always be used at the recommended pressure. The cap's capacity is stamped on the bottom of it.
HIBARI® stands for reliability regarding engine cooling systems, thermostats, radiators, radiator caps, and coolant fluids.
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