Genuine BMW 17-12-8-654-824 Coolant Expansion Tank

The Genuine BMW 17-12-8-654-824 Coolant Expansion Tank is an OEM replacement reservoir designed to maintain proper coolant levels and pressure in your BMW's cooling system. This factory expansion tank is engineered to BMW's exact specifications, ensuring proper fit, function, and durability.

Key Features:

• Genuine BMW OEM part - guaranteed factory quality and fitment
• Durable construction designed to withstand high temperatures and pressure cycling
• Includes integrated sensor mounting provisions for coolant level monitoring
• Direct replacement for worn or damaged original expansion tank
• Maintains proper cooling system pressure and prevents coolant loss

The coolant expansion tank is a critical component that allows for thermal expansion of coolant as the engine heats up. Over time, plastic expansion tanks can become brittle and develop cracks, leading to coolant leaks and potential overheating. Replacing a failing expansion tank with this genuine BMW part ensures your cooling system operates as designed and helps prevent costly engine damage.