Genuine OEM 64116910544 - HVAC Heater Control Valve (Rear)

Product Overview

This Genuine OEM 64116910544 rear HVAC heater control valve is the factory-original component for BMW X5 and X6 models from 2004 to 2019. The valve regulates coolant flow through the rear heating system, maintaining precise cabin temperature control in dual-zone or rear-seat climate configurations. Designed to OEM specifications, this part ensures your BMW operates with factory-engineered reliability and performance.

This heater control valve is sold individually. Verify fitment for your specific model year and trim using the vehicle selector tool above.

Symptoms of a Failing HVAC Heater Control Valve

• Rear cabin does not heat, or heating is inconsistent or weak
• Front cabin temperature control unaffected, but rear zone fails to warm
• Coolant leaking near the valve or under the rear seat area
• Hissing or gurgling sounds from the rear HVAC lines when engine is running
• Check coolant level frequently; low coolant despite no visible leaks

Cross Reference Numbers

This Genuine OEM 64116910544 is equivalent to or replaces the following part numbers: 64-11-6-910-544, 64116910544.

Vehicle Compatibility

This part fits the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility for your vehicle.

• BMW X5 3.0i (E53): 2004–2006
• BMW X5 4.4i and 4.8is (E53): 2004–2006
• BMW X5 3.0si (E70): 2007–2008
• BMW X5 4.8i (E70): 2007–2008
• BMW X5 xDrive30i (E70): 2009–2010
• BMW X5 xDrive35d (E70): 2009–2013
• BMW X5 xDrive35i (E70): 2011–2013
• BMW X5 xDrive48i (E70): 2009–2010
• BMW X5 xDrive50i (E70): 2011–2013
• BMW X5 M (E70): 2010–2013
• BMW X5 M (F85): 2015–2018
• BMW X5 sDrive35i (F15): 2014–2018
• BMW X5 xDrive35d (F15): 2014–2018
• BMW X5 xDrive35i (F15): 2014–2018
• BMW X5 xDrive40e (F15): 2016–2017
• BMW X5 xDrive50i (F15): 2014–2018
• BMW X6 xDrive35i (E71): 2008–2010
• BMW X6 xDrive50i (E71): 2008–2010
• BMW X6 ActiveHybrid (E71): 2010–2011
• BMW X6 M (E71): 2010–2011
• BMW X6 M (F86): 2012–2019
• BMW X6 sDrive35i (F16): 2015–2018
• BMW X6 xDrive35i (F16): 2012–2019
• BMW X6 xDrive50i (F16): 2012–2019

This may also fit other applications. Please use the vehicle selector tool to verify fitment.

Often Replaced Together

For a complete rear climate control system service, many owners replace the following at the same time:

• Front HVAC heater control valve (if front heating is also compromised)
• Coolant hoses and clamps in the rear heating circuit
• Coolant flush and fill (recommended when replacing heater valves)
• Rear HVAC blend door actuator (if rear temperature control is erratic)

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Frequently Asked Questions

How do I know if my BMW X5 or X6 rear heater control valve is failing?

The most common sign is that the rear cabin does not heat properly while the front climate control works fine. You may also notice coolant leaking near the rear seat area, a sweet smell (coolant odor), or hissing sounds from the rear HVAC lines. If your coolant level drops frequently without visible external leaks, the valve may be leaking internally into the cabin or onto the floor. A professional scan can also reveal HVAC control module faults linked to the valve.

What is the difference between a front and rear heater control valve?

The rear heater control valve (like this 64116910544) regulates coolant flow specifically to the rear cabin heating system, typically used in dual-zone climate control setups. The front valve controls the main cabin heat. They are separate components with different part numbers and locations. If only the rear is not heating, replace the rear valve. If both front and rear fail, both valves may need service.

Is this part a Genuine BMW component?

Yes. This 64116910544 is a Genuine OEM part manufactured to BMW factory specifications. It carries the same warranty and reliability as parts supplied by BMW dealerships. Using genuine components ensures your climate control system operates as designed and maintains proper coolant flow without leaks.

What tools or special equipment do I need to replace this valve?

Heater valve replacement typically requires basic hand tools (wrenches, screwdrivers), a drain pan for coolant, and jack/jack stands if you need to access the rear seat area or undercarriage. Some models may require partial seat removal. Consult your BMW service manual or a professional technician for the exact procedure for your model year, as access varies between E53, E70, F15, E71, and F16 platforms.

Will I need to bleed the cooling system after replacing the valve?

Yes. After installing a new heater control valve, the cooling system must be refilled with the correct BMW coolant mixture and bled to remove air pockets. Failure to bleed properly can result in air locks, poor heating performance, and potential overheating. Follow your BMW service manual or have a professional technician complete this step to ensure proper system operation.

Can I replace just the rear valve, or do I need to replace the front one too?

You can replace just the rear valve if only the rear cabin is not heating. The front and rear valves are independent components. However, if both heating zones are failing, both valves may need replacement. If the front is working normally, replacing only the rear valve will restore rear cabin heat without unnecessary expense.

Order Genuine OEM 64116910544 today to restore rear cabin heating in your BMW X5 or X6. In-stock orders ship same or next business day from our U.S. warehouse, and our fitment team is one call away if you need help confirming the right part for your BMW.

Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.