Found this under my battery

[Anthead]

What is it?




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[kronus]

battery acid expansion tank - http://www.realoem.com/bmw/enUS/show...75#61211376693

[Anthead]

Found this under my battery

battery acid expansion tank - http://www.realoem.com/bmw/enUS/show...75#61211376693

Thanks!

EDIT: I guess I was looking for what looked like an actual tank, looks like the hose and little "box" on the end is the tank? Dam I have so much to learn


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