My e70 gets mystery water same location I don’t check often enough to figure out the source. I drilled a drain hole and it apparently collects slow enough no more puddle. My guess was spray from wheel but I haven’t had a chance to root that one out.
https://chatgpt.com/share/69b0351b-b...1-890b0c77c09c
GPT found an answer on the o-ring in your case. BMW doesn’t list the size but 7.5x1.5 is what GPT came up with.
That’s way way smaller than e53 so it’s less likely the fault. More likely if like e53, there’s a plastic to plastic flare fitting with no seal just plastic to plastic that’s where I put Teflon[emoji769] tape.
Find my awr-fix on the siphon jet to compare.
The connector seems similar from the BMW shop manual and if it’s held together just from one side I’m pretty confident it’s a similar problem with a similar fix.
–awr–
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