I was doing some cleanup work in my trunk today, 1987 325is, and I found a small square plastic box under the battery tray. It has a whole in the bottom that fits into the rubber grommett at the bottom of the well that drains to the outside and it had a small rubber hose attached to the top part of the box that's obviously a drain for something but the other end of the hose wasn't attached to anything. Does anyone know where the rubber hose is supposed to attach? Is this leftover as a drain that used to hook to a battery?
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I checked on realoem and couldn't find it. -
Battery vent"I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj
85 323i M TECH 1 S52 - ALPINEWEISS/SCHWARZE
88 M3 - LACHSSILBER/SCHWARZE
89 M3 - ALPINEWEISS II/M TECH CLOTH-ALCANTARA
91 M TECHNIC CABRIO TURBO - MACAOBLAU/M TECH CLOTH-LEATHER
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If that box is not connected to the battery, and the battery vents out liquid, does that aid corrosion and/or rust?1990 325i
2004 330i Individual 6-speedsigpic
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Shouldn't vent liquid, but gas from the battery does. And yes, it can help corrode that area. Make sure it's hooked up to your battery.Estoguy
1986 BMW 325, Alpenweiss ~ "Elsa"
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