Genuine OEM Volkswagen Coolant Expansion Tank, part number 5WA121407F. This essential tank holds excess engine coolant, allowing for thermal expansion and contraction within the cooling system while maintaining proper pressure. It is typically located in the engine bay, connected to the radiator and engine coolant passages. Constructed from durable, translucent plastic, this tank weighs 0.512 kg and has a length of 0.22 meters. Using a genuine OEM expansion tank ensures correct material composition, pressure rating, and connection points, critical for the long-term reliability and safety of the vehicle's cooling system.

Catalogue entry: CONTAINER.

Fitted with: 2Q0121321A COVER, 04E121687 SEAL, 5WA121407C CONTAINER, 04E121687B SEAL.