This ELRING valve stem seal, part number 001.850, is engineered to provide a reliable seal between the valve stem and the cylinder head. Its primary function is to prevent engine oil from entering the combustion chamber, which can lead to blue smoke, increased oil consumption, and fouled spark plugs. Crafted from durable materials, this seal is built to withstand the high temperatures and pressures found within the engine. Proper installation of this component is crucial for maintaining engine health and efficiency. Replacing worn valve stem seals can restore lost engine power and improve fuel economy. ELRING is a trusted name in engine components, known for producing parts that meet or exceed original equipment specifications. Choosing ELRING ensures you are fitting your vehicle with a part that offers longevity and dependable performance.