Generally, I can not answer that question because there are too many variables. But here is a common reason for rear end noise on 1968 to 1991 Mercedes. Link to parts: https://mercedessource.com/store/search?keys=sway%20bar%20links
Hey Kent, What is That Clunking Noise in My Rear End Driving Over Rough Ground???
Generally, I can not answer that question because there are too many variables. But here is a common reason for rear end noise on 1968 to 1991 Mercede...