In solving my recent issue with a bad MAS for my son's '90 300E, I ended up using a MAS from a '91 car that had a slightly different number. It seems to function in the same way as his original one (assuming the previous owner was using the original part).

In so far as MBZ changes their numbers frequently, where can I find what parts numbers are currently and what parts numbers used to be the correct one. I want to make sure that this MAS we're using doesn't have any long term detrimental effects on his car.

thankAL

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03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather
90 300SEL 214k Pearl Black/ Alto Grey/Black Leather

Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio