New F8XM Sheet Metal Expansion Tank

Most modern BMWs are notorious for cooling system issues, often leaving owners stranded or causing irreversible engine damage if they fail. The coolant expansion tank is at the heart of these issues�a crucial component that holds hot engine coolant under high pressure. Unfortunately, BMW manufactured the factory F8X expansion tanks out of plastic. After years of exposure to high temperatures and chemical-laden antifreeze, the plastic degrades, eventually weakening enough to rupture.

With this failure in mind, Turner's team of BMW enthusiasts set out to develop the ultimate solution for F8X M2, M3, and M4 owners: a robust expansion tank that is built to last! Constructed from durable 5052 TIG-welded aluminum, this tank withstands high temperatures and pressures without deteriorating over time. Unlike the OEM molded plastic tank, this alternative is not prone to cracking, leaking, or weakening. With the Turner Motorsport Aluminum Expansion Tank Kit, you'll never experience expansion tank failure again!