VAICO V20-0034 Radiator Coolant Expansion Tank Cap for BMW

The VAICO V20-0034 is a direct replacement radiator expansion tank cap designed for various BMW models. This pressure-rated cap is a critical component of the cooling system, maintaining proper coolant pressure to ensure optimal engine operating temperature and prevent coolant loss.

Key Features:

• Precision-engineered replacement expansion tank cap for BMW vehicles
• Maintains proper cooling system pressure for efficient engine performance
• Manufactured to OE specifications for reliable fit and function
• Helps prevent coolant boil-over and system leaks
• Direct fit for BMW X-series, 1-Series, 3-Series, 5-Series, 6-Series, 7-Series, and Z4 models from 2003 onwards

This expansion tank cap features a spring-loaded pressure relief valve that opens at the specified pressure rating to protect the cooling system from over-pressurization. Regular replacement of the radiator cap is recommended as part of routine cooling system maintenance to ensure seal integrity and proper pressure regulation.