What is the difference between 604 094 14 04 "Stepped" and "B1117A10" for Mann? Which do I order for my '01 ML320?

Also, how do I order the dust (micro) filter for the ML320 (i.e., parts number)?

Lastly, I could not find the right parts for '98 E320 dust (micro) filter on fastlane. Can you help? Thank you very much in advance.

The 604-094-13-04 & 604-094-14-04 are interchangable, only the brand is different.

The '01 ML320 dust filter is part# 163 835 02 47


For the '98 E320 it is part# 210 830 10 18

The E320 also has an activated charcol filter part# 210 830 02 18