I Finally remembered to check the cars. I checked three 86s and a 91. The MB part # you have is the same as 3 of the pumps. I didn't check the latest # from MB in the computer, because the # might have changed. The type # Matches 3 cars and all 4 cars say 82 bar. So I'd say you have the right pump. Since it is possible someone changed pulleys, I checked diameters. All 4 have a diameter of 127mm. Hope this helps.

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