This is a compensating tank for coolant designed for a BMW X5 E70 4.8I model from 2006 to 2010 with a 261KW petrol engine. The tank is for the expansion and regulation of coolant levels in the vehicle. It is a genuine BMW part with the manufacturer's part number 64.11-6910544-04, suitable for left-hand drive models. The product is a performance part, featuring a water valve and compatible with an automatic 6-speed transmission.
