Valves seal off the combustion chamber and optimise gas exchange. As they are constantly in motion, An engine cannot run without valves. Valves are designed to last the service life of the vehicle. However, they also suffer wear and tear which can lead to reduced power, rough idle, misfire in a vehicle and may need replacement. Check our Online Automotive Spare Parts Store to buy Genuine and leading brands like EVL and Kar Valves. In case of any query do get in touch with us.