pawoSD and Jorn, Thank you both for your excellent posts. I appreciated it. Upon further research on the issue of this tunnel piece, it turns out to be the correct part for the location area undercarriage above the transmission, hence the transmission tunnel, tunnel piece part number 124 610 06 71.

The original tunnel piece fits the follow models:


1993 Mercedes-Benz 300 CE Base 3.2L L6 - Gas
1992 Mercedes-Benz 300 CE Base 3.0L L6 - Gas
1991 Mercedes-Benz 300 CE Base 3.0L L6 - Gas
1990 Mercedes-Benz 300 CE Base 3.0L L6 - Gas
1989 Mercedes-Benz 300 CE Base 3.0L L6 - Gas
1988 Mercedes-Benz 300 CE Base 3.0L L6 - Gas
1993 Mercedes-Benz 300 D 2.5 2.5L L5 - Diesel
1992 Mercedes-Benz 300 D 2.5 2.5L L5 - Diesel
1991 Mercedes-Benz 300 D 2.5 2.5L L5 - Diesel
1990 Mercedes-Benz 300 D 2.5 2.5L L5 - Diesel
1993 Mercedes-Benz 300 E 2.8, Base 2.8L L6 - Gas, 3.2L L6 - Gas
1992 Mercedes-Benz 300 E 2.6, Base 2.6L L6 - Gas, 3.0L L6 - Gas
1991 Mercedes-Benz 300 E 2.6, Base 2.6L L6 - Gas, 3.0L L6 - Gas
1990 Mercedes-Benz 300 E 2.6, Base 2.6L L6 - Gas, 3.0L L6 - Gas
1987 Mercedes-Benz 300 TD Base 3.0L L6 - Diesel
1993 Mercedes-Benz 300 TE Base 3.2L L6 - Gas
1992 Mercedes-Benz 300 TE Base 3.0L L6 - Gas
1991 Mercedes-Benz 300 TE Base 3.0L L6 - Gas
1990 Mercedes-Benz 300 TE Base 3.0L L6 - Gas
1989 Mercedes-Benz 300 TE Base 3.0L L6 - Gas
1988 Mercedes-Benz 300 TE Base 3.0L L6 - Gas
1995 Mercedes-Benz E 300 Base 3.0L L6 - Diesel
1995 Mercedes-Benz E 320 Base 3.2L L6 - Gas
1994 Mercedes-Benz E 320 Base 3.2L L6 - Gas




I also found an alternative to the above tunnel piece:

Design Engineering 050501 21" x 24" Floor & Tunnel Shield II - Adhesive Heat and Sound Insulation self adhesive.

This Design Engineering part 050501 appears to be something I am interested in. Does anybody knows about this? If so, what the results turns out? Is it a good replacement for the original Mercedes tunnel piece?

Comments, feedback/advice is greatly appreciated. Thanks to all for reading this post.