It's my understanding, 94 & 95 rear bumpers and trim parts are same, but different than all other years. My dealer wants $184. Group 88 Attachment Parts, Subgroup 075 Rear Bumper, "Impact Pad Cover" Part #124 885 1521. Go to your dealer and have them search by your VIN to be certain of part #!
Most junk yards want to sell entire bumper assembly. Many have damaged "Impact Pad Cover".
If you have all the pieces, you can use a plastic epoxy.
I'm waiting till winter passes before replacing mine.
PS Another MB screw up! This part should be flexible!