Model Year 2002 to 2005 M-Class combo antenna With three color coded and keyed FAKRA connectors. MB part number is XXXXX 820 15 75.
They are held down with a retaining bolt from the inside.The liner must be lowered to access to hold down. Caution you can easily brake a piece that would cost far more than having the part installed professionally. The clips are sometimes very tricky and these cars contain many hidden screws. Please press ACCEPT so I can be paid for my help the if you need anything further pleased feel free to ask