420SEL,

Just be sure that you put in the new rubber in the right way. It is not difficult, it only needs some extra attention. There are a lot of shops (even original MB dealers) that do not put the rubber right in the groove; make sure that the rubber fits the way it should...
All other need to knows are already written by Wilton.

greetingz,

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1990 300SL-24
1993 C250D with a minor 600+k kilometer
www.MBenzNL.com(the Netherlands)