You may want to take a look at removing the cat shield and pre-soaking those exhaust bolts, as you'll likely have to remove your cat to get to the lower left valve cover. That means you should get a few new gaskets and bolts too. We spent a good 4-6 hrs. on this alone with my car.
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2022 BMW 530i
2021 MB GLA250
2020 BMW R1250GS
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