Genuine BMW 17-13-7-647-283 Coolant Expansion Tank with Level Sensor

The Genuine BMW 17-13-7-647-283 Coolant Expansion Tank is an OEM replacement component designed to maintain proper coolant system pressure and fluid levels in your BMW. This factory-original expansion tank includes an integrated coolant level sensor for accurate monitoring of your vehicle's cooling system.

Key Features:

• Genuine BMW OEM part - ensures perfect fit and reliable performance
• Integrated coolant level sensor for system monitoring
• Engineered to withstand extreme temperature fluctuations and pressure cycles
• Direct replacement for worn, cracked, or damaged expansion tanks
• Prevents coolant loss and maintains proper cooling system function

The coolant expansion tank provides a reservoir for coolant as it expands and contracts with temperature changes. Over time, exposure to heat cycling can cause the tank to crack, develop leaks at connection points, or suffer mounting bracket damage. Replacing a compromised expansion tank is essential to prevent coolant loss, overheating, and potential engine damage. This genuine BMW replacement restores your cooling system to factory specifications.

Note: When installing a new expansion tank, inspect all hoses and connections, and have fresh coolant available to properly refill and bleed the cooling system.