Autostar Germany EXPANSION TANK CAP For AUDI, Volkswagen 1H0121321C

Replacement Number: 1H0121321A, 357121321C.

Description: Autostar Germany Expansion Tank Cap 1H0121321C is engineered to maintain correct pressure within the cooling system of Audi and Volkswagen vehicles. Designed to OEM specifications, this high-quality coolant reservoir cap ensures a secure seal, preventing coolant loss, overheating, and pressure imbalance. Made from heat-resistant, durable materials, it performs reliably under extreme temperature and pressure conditions. A faulty expansion tank cap can lead to coolant leaks and engine damage, so replacing it with a trusted Autostar Germany component helps protect engine performance and longevity. Easy to install and perfectly compatible with various Audi and VW models, this expansion tank cap is an ideal solution for routine maintenance or replacement, delivering consistent cooling efficiency and peace of mind.