BMW X5 E53 Heater Water Valve 64116910544 Cooling Electromagnetic Control Valve

For BMW X5 E53 series (3.0i, 4.4i, etc.), when there is warm air intermittently, only cold air, or the instrument cluster shows cooling system fault codes, usually due to the heater core water valve sticking or seal failure. This cooling solenoid valve directly replaces original numbers 64116910544 and 64116906652, directing coolant flow to the heater core to regulate interior temperature and maintain engine cooling circulation. After installation, it can completely solve coolant leaks and heater failure, restoring AC system stability.