BMW Transfer Case Output Shaft Seal - Genuine BMW 27109485005

Product Information

BMW Transfer Case diagram for 540d xDrive, 740i xDrive, 750i xDrive, 740e xDrive, & more

A transfer case output shaft seal is a sealing component located where the driveshaft connects to the transfer case in four-wheel- and all-wheel-drive vehicles. Its job is to prevent transmission fluid or gear oil from leaking out while keeping dirt and debris from entering the transfer case. By maintaining proper lubrication and fluid levels, the seal helps ensure smooth power delivery to the axles and protects internal components from damage.

• Visible fluid leaks around the transfer case or under the vehicle.
• Low fluid levels, leading to whining or grinding noises from the drivetrain.
• Vibration or driveline issues, caused by inadequate lubrication from fluid loss.

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.