This listing is for Mercedes Benz OEM cylinder head breather plug kit Only for M272 V6 petrol engine 2006-2017 W204 W211 W203 W209 W171 W164 W251 W219 W218 kit includes 1x 0009985690 2x 0009986590

A cam cover plug, also known as a valve cover plug, is an essential component of a car's engine. It is designed to cover and protect the camshaft or valve cover, which houses various parts including the camshaft, valves, and rocker arms. The main purpose of the cam cover plug is to seal the cam cover tightly, preventing any oil leaks and ensuring proper lubrication of the engine.

The cam cover plug is typically made of durable materials such as rubber or plastic, with a seal or gasket attached to provide a tight fit. It is located usually towards the front or rear, and can be easily accessed for inspection or maintenance. Besides sealing the cam cover effectively, the plug also prevents any dirt, debris, or contaminants from entering the engine, which could potentially cause damage to the internal components. Regular inspection and replacement of the cam cover plug are necessary to maintain the engine's performance and prolong its lifespan.