If you do replace the fan, might be a nice upgrade to replace it with the larger PPK2 fan (and larger fan relay?). I wonder if there's any aftermarket replacements as well.
I don't think fans are usually weak points or failure points, but if you're going all out, would be nice to see what the cost of the upgrade is anyways, while you're in there you know?
Edit* Noticed 128i, not sure the fan upgrade would be needed at all, maybe it doesn't make sense, idk.
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