Review on 🔧 URO Parts Expansion Tank 17137787039 with Clamp by Kyle Tran

- 2001 BMW 330CI Automatic - Good quality for the price. Looks better than the original but time will tell. Supplied with bottom lock/clip connector but no coolant level sensor. CAUTION: On automatic transmissions, the transmission thermostat is likely to come loose at the top due to the force required to break the o-ring when separating the tank from the bracket. The thermostat is pressurized and installed in the largest hole in the bracket over which the large hole in the bottom of the expansion tank fits. I had to remove the tank twice, and both times the top of the thermostat broke. The last change was 5 years ago. Order a Beck Arnley 143-0872 Thermostat Transfer Thermostat just in case. You can always return it if yours isn't broken.