They are a work of art although I understand why MB decided to move to a cast aluminum trailer arm on the later 126 because that thin metal can't take the working of the spring over the life of the rest of the components on the car. If I had been doing the replacement job myself and seen the hole worn thru the old arm, I would have installed a heavy piece of rubber in the new arm prior to putting the spring back in.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13