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Hey I just bought my 2020 M340i with 23k miles and I'm getting gear oil leaking from the rear up top. I read this entire post multiple times and some people say part number 33-11-8-677-753 fixed the issue and some say 33-11-8-742-755 is the fix. I'm trying to make sure I get the correct differential cover so I don't have to do the job twice. Thanks for the help
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