I took mine off I thought it was cracked but it wasn't .I saw that the thermostat was cock eyed so I put a new one in ,when I put it togeather again poured in anti freeze it poured out the bottom.i also noticed my sensor didn't have any covering on it ,does it need it.
RepairPal Certified shops can diagnose and repair your 2001 BMW 325Ci. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.