'97 W140 front suspension parts - PeachParts Mercedes-Benz Forum

majooo · #1 12-25-2010, 01:15 AM

Hey everyone!
My car a 1997 S500 (W140 2nd gen) will need some front suspension work.
I’m doing research for the parts now and have a couple of questions before I start ordering.
1) What is the difference between the upper control arm L: 140 330 76 07 and 140 330 54 07
R: 140 330 77 07 and 140 330 55 07 ?
My car has the second part(s) number installed currently, which are the more expensive ones. Both arms for L ( 76 07 and 54 07 ) look identical, but there is a significant price difference between them… same for the R ( 77 07 and 55 07 ). Can I use the cheaper ones without any problems? Are they interchangeable?

2) The replacement bushings for the lower control arm part 140 330 82 07 (one set needed per each side). I understand there is a special tool needed to install these since they have a hydraulic center. (tool 140 589 11 43 00). I would have to get the dealer to press these in for me,
but does any one have any experience with the polyurethane bushings for the LCA? They seem to be way cheaper and there is no need for the special tool. (Just a regular press or even an AutoZone rental tool should be able to do it.)
I would like to know how exactly does the ‘hydraulic’ bushing work. Is it a noticeable difference in ride comfort / response? My car is highway /long distance smooth ride queen. :-)

The previous owner had 22” with low profile on. It’s time to restore the ride quality to the factory specs.
Your help is much appreciated!
Thank you in advance for ALL your opinions!
Mark.

mbdoc · #2 12-27-2010, 08:28 AM

MB hasn't supplied those earlier number parts(140-330-54/55-07) for over 15 years.

Get Lemfoerdoer 140-330-77-07 & 140-330-76-07 parts!

IN 1992 the original W140's had a hard non-hydraulic bushing & we could not keep those cars from shaking! Don't waste your time on non-OE bushings.