NEW Coolant Thermostat & Electric Water Pump for BMW 428i 528i X1 X3 B20A N20. BMW X3 (F25) X3 (F25) sDrive 20 i, X3 (F25) xDrive 20 i, X3 (F25) xDrive 28 i. 2010/09-. BMW 5 X1 Estate (E84) X1 Estate (E84) sDrive 16 i, Estate (E84) sDrive 20 i, Estate (E84) xDrive 20 i, Estate (E84) xDrive 28 i 2009/03-.