036 109 675 A: Valve stem seal 6 mm for Audi A3, A4

This valve stem seal with a diameter of 6 mm is a new replacement part compatible with several Audi models: the A3 (8P), the A4 (B5) and the A4 (B6). It plays a role in the engine timing system to ensure the seal between the valve stem and its guide, preventing any oil leakage into the combustion chamber. In the context of restoring or servicing a classic vehicle, its replacement is recommended as soon as blue smoke appears at the exhaust or during a thorough cylinder head overhaul. It is an essential part to preserve the proper functioning of the engine and guarantee the longevity of these Audis.