Genuine OEM Volkswagen Chain Tensioner, part number 03C109507AE. This essential engine component is responsible for maintaining the correct tension on the engine's timing chain, which is crucial for synchronized valve and piston movement. It is located within the engine's timing assembly. Constructed with a durable plastic arm, a metal spring, and a bolt, it weighs approximately 0.048 kg. Opting for a genuine OEM chain tensioner ensures precise factory specifications for tensioning force and material durability, which is vital for preventing catastrophic engine damage and ensuring reliable, long-term engine performance.

Catalogue entry: TENSIONER.