Thread: N55 coolant expansion tank leak
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      09-23-2018, 09:27 PM   #3
shawnyeeah
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Drives: '12 N55 135i
Join Date: Feb 2016
Location: Atlanta, GA

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Happened to me at 80K miles. Also keep in mind the N55 tank is different from the N54 tank if you plan on sourcing the parts
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