Audi VW Coolant Expansion Tank Cap - Calorstat 1C9121321

Product Information

The engine coolant reservoir cap is a critical component of a vehicle's cooling system. It seals the coolant reservoir or expansion tank, which holds excess engine coolant and maintains pressure in the cooling system. The cap is designed to release pressure at a specified level, ensuring that the cooling system operates effectively without excessive pressure buildup.

• Coolant Leaks: A damaged or improperly sealed cap can lead to coolant leaking from the reservoir, which may be visible under the vehicle or around the reservoir itself
• Overheating Engine: If the cap fails to maintain the proper pressure, it can cause the engine to overheat due to a drop in the boiling point of the coolant, leading to inadequate cooling
• Low Coolant Levels: Frequent need to add coolant to the reservoir may indicate a faulty cap that isn’t sealing properly, allowing coolant to escape

About Calorstat

Founded in 1927 in France, Vernet originally used the name Calorstat, and is a premium aftermarket brand. With presence in more than 70 countries, Calorstat is the world-wide leader of the segment, offering to the market the most complete line in elements of thermal regulation for motors of internal combustion.