I'm going in to replace my drive belts on my 82 300sd as my AC compressor belt is busted and Ive never replaced the others on the car as long as Ive had it. I got the right size for the AC and Power steering, but I think I goofed on Alternator-water pump belts. I got the 10x1035 belts and I believe I need the 10x1000 size as my engine is -050272. am I correct that any number over 039511is supposed to have the smaller belts?

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1983 300SD White with Grey interior

the Continentals I just put on were 10x1035

We have the same engine.. kinda.

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I would suggest taking the old ones off and measure them. I had quite a time swapping out the alt belts on my SD.

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83 SD

84 CD