Audi Transfer Case Output Shaft Seal Rear (A8 Quattro S8) - Genuine VW Audi 09E409399

Product Information

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 VW Audi

The Volkswagen Group, also known as “VAG”, consists of Volkswagen, Audi, Lamborghini, Bentley, Bugatti, Porsche, Ducati, MAN, Scania, SEAT, and Skoda. The original parts used by VAG to build your car are available as replacement parts under the “Genuine VAG” brand. Manufactured under the direction of VAG, expect excellent quality and a premium price since these parts are available exclusively through the VAG Dealership network.

You may not realize this, but the parts that make up your VAG are not necessarily manufactured by VAG. No cause for concern, as VAG designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for VAG 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 VAG parts box and find an OEM branded part inside, simply with the addition of a VAG 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.