I am trying to find the cause of a hard knocking when going over bumps in my 86 560SEL. I have raised the lever on the valve manually to watch the car raise/visually inspected the struts for leaks/changed the accumulators.

I still have the knock and want to change the top and lower bushings on the rear struts but i can not find them. I believe the part #'s are

114 326 00 68-top
115 326 16 68-bottom


I found https://www.pelicanparts.com/More_Info/1153261668MBZ.htm?pn=115-326-16-68-MBZ&bt=Y&fs=0&SVSVSI=3481
but that says top of strut and i believe that is the bottom bushing. Should i just order 4 of those?


Any advice on other things to check are also appreciated but i do plan on replacing the bushings so if anyone knows where i can buy them.

post up if this fixes your issue as my SEC has the same symptoms
but hesitant to open up the SLS system to drop the struts

I was at NAPA the other day and I saw 4 shock bushings for $12
I wonder if they are hard enough to take the load?

Just bumping this for anyone else in the future. The new top shock bushings did fix my clunking noise when going over certain bumps. The ones i replaced from the top had the part # 115 326 16 68 which is supposed to be the bottom ones. I do remember reading that there was a change in the bushings at some point so maybe they started using a thicker one eventually. Anyways i put the part # 114 326 00 68 on the top and it fixed the problem. I didn't even bother changing the bottoms when i saw how different the top ones were as i didn't want to disconnect the struts if i didn't have to.

A separate problem(maybe?) im having is the car seems to sit very high, higher then i remember it sitting before i started messing with the SRS. If i bleed the leveling valve i can get the car to drop down to like 25 1/4 inches from the wheel well to the ground. But when i adjust the valve using the 4mm pin and the adjustment rod it raises to 27 3/4 and will not go lower then that even if i manually pull the valve lever all the way down only goes lower if i bleed it. It Does level correctly when adding weight. It just looks a little off because the front is only 27 off the ground. Is the back supposed to be higher?

Are those the double bushing you are talking about?

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