BMW Valve Cover Gasket - Elring 11127565286 1 Series M, 135i, 335i, 335i xDrive, 335is, & more

Is your BMW leaking oil from the cylinder head?

You are likely suffering a leaking valve cover gasket if you are noticing oil leaks down the side of your engine coming from the cylinder head. With age, the soft pliable rubber becomes a brittle, hard plastic. This causes the valve cover gasket to lose its seal and allows oil to leak out of the engine.