It seems that two different types of filters are available for your GLE350.
Purflux makes a regular paper filter with the wavy pleats. Part number L394. The Mahle OX814D seems to be a reboxed Purflux
Mann and Hengst make plastic mesh-backed fleece filters with straight pleats.
Mann HU7025z (no end caps, just glue)
Hengst E129H (has black plastic end caps)
Mercedes may use two different OE suppliers at the same time. The supplier's name will usually be written on the filter along with the MB peace sign logo
Take some pictures of it for us
Also worth noting: Ecogard makes a knockoff with the wavy pleats like Purflux uses, but it is cheap paper media.