BMW Gearbox Flap Position - Genuine BMW 64118390422

Product Information

BMW Heater Blend Door diagram for 325i, 325is

An HVAC blend door actuator is a small electric motor that controls the movement of the blend door(s) inside a vehicle’s heating and air conditioning system. By adjusting the position of the door, it regulates the mix of hot and cold air, allowing the cabin temperature to be set to the driver’s preference.

• Inconsistent or incorrect cabin temperature, such as only hot or only cold air regardless of settings.
• Clicking or knocking noises from behind the dashboard when adjusting climate controls, caused by broken gears inside the actuator.
• Unresponsive climate control adjustments, where temperature or airflow direction does not change as commanded.

About Genuine BMW

The original parts used by BMW to build your car are available as replacement parts under the “Genuine BMW” brand. When ordering a Genuine BMW part you are guaranteed to get the same part that you would pick up from your local dealerships part department. Genuine BMW parts have been built to BMW’s stringent standards and are the same quality of the original parts used to build your Ultimate Driving Machine.

You may not realize this, but the parts that make up your BMW are not necessarily manufactured by BMW. No cause for concern, as BMW designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for BMW for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine BMW parts box and find an OEM branded part inside, simply with the addition of a BMW logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.