Siless Max 120 mil (3mm) 6 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (6 sqft)
You can get this from Amazon. You only need one box. I bought 2 boxes and returned one of them. The dealer indicated to add more sheets to the rear door would add too much weight that could compromise the lift system for the rear door. Make sure your dealer adds the other two Mercedes items to your car as well. See my subsequent post below:
JRD47
6 posts · Joined 2025
#36 · Aug 15, 2025
I just looked at the work order the dealer gave us, which describes what the dealer did. It looks as if they installed MP Parts, a "Dampening, Floor" and a "Dampening, Flap", as well as the "cust supplied" [the box of Siless] materials. The work order [MB Work Order-08122025.pdf] is attached with the MB Part numbers. Hope it is of help to others.
Attachments
MB Work Order-08122025.pdf
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