11 34 560 Replacing all valve stem seals (N52K): Installation
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2011 BMW 323i, 2010 BMW 328xi, and 2010 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.
Fit the mounting sleeves (plastic sleeves) contained in the delivery specification on the valve stem end.
Lubricate mounting sleeve.
Press on valve stem seal by hand with special tool 11 6 380 as far as it will go.
Assemble engine.