BMW Inner Left Window Channel Cover - Genuine BMW 51337221177

Product Information

BMW Window Seals diagram for 640i, 640i xDrive, 650i, 650i xDrive, M6

A window channel on a car is the rubber or felt-lined track that guides and supports the side windows as they move up and down. It ensures the glass stays properly aligned within the door frame, provides a tight seal against wind and rain, and reduces rattling or vibration when the vehicle is in motion. The channel also helps protect the window glass from scratches by cushioning it during operation.

• Difficulty raising or lowering the window, often accompanied by sticking or jerky movement.
• Increased wind noise or water leaks around the window due to poor sealing.
• Scratches or visible wear on the glass caused by a worn or damaged channel.

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.