The BMW/MINI Genuine OEM Cabin Filter Charcoal 64 31 6 835 405 Microfilter is a direct replacement cabin air filter made in Germany. It is designed to fit BMW vehicles and has OE/OEM part number 64 31 6 835 405 and manufacturer part number 64316835405. The filter is made of charcoal and is a superseded part for numbers 64316823724, 64316823725, and 643119321876.