64 53 515 Replacing Drier Insert For A/C System (Automatic A/C Basic)
WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.
Replace drier insert for A/C system. See 64 53 517 REPLACING DESICCANT INSERT FOR A / C SYSTEM (AUTOMATIC A / C HIGH) .