The valve cover is a cover that protects the upper part of the cylinder head of a motorbike engine. It has recesses that allow access to the valves and protect the engine compartment from dirt, dust and other contaminants, and is usually made of aluminium or another robust material that can withstand the high temperatures and stresses in the engine. It is fitted with special gaskets or sealing rings to ensure a reliable seal against the escape of engine oil or combustion gases.
When servicing the engine, it is important to check the valve cover regularly to ensure that it is tight and shows no signs of leakage or damage. A leaking valve cover can lead to oil loss and impair the proper functioning of the valves. If necessary, defective seals should be replaced and the valve cover tightened correctly to ensure optimum performance and reliability of the motorbike.