Thanks for the pic, TX76513. After seeing the picture I'd have to agree. Is it Ponton or Pontoon (one or two "o"s)?

Seems like most folks are leaning toward the W114/115 for the other grille. I've got 2 votes for a 108 though...

The one on the left measures 26.5"W x 15.5"H. The star base for the grille on the right is held on with a clip.

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1998 E320 4-Matic Wagon