Found a new part, Water outlet [bicuspid] valve. - Bimmerfest - BMW Forums

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Old 07-16-2019, 09:17 AM
Doug Huffman's Avatar
Doug Huffman Doug Huffman is offline
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Location: Washington Island, Wisconsin, thru Death's Door
Join Date: Apr 2015
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Mein Auto: CPO2012 X5 35d M57(E70)
Found a new part, Water outlet [bicuspid] valve.

Water outlet valve. PN 51-71-7-138-858

It is supposed to drain the cavity below the brake master cylinder.

Changing cabin air inlet filter today, I noticed an significant accumulation of leaves since I cleaned the pocked below the filter housing and below the ECU box. I sucked out all of the dry leaves from the passenger side and thought to check the drivers side.

More leaves, thankfully all dry. The first time I cleaned this pocket it had a gallon of rotten water. Today I lowered a light to the bottom and found the bicuspid valve full of dried mud. So I dug out the mud, andtried to get the rubber valve out - unsuccessfully. I did shove a screwdriver through the valve so it will pass some water.

I did not see a parallel valve on the passenger side, nor was it diagrammed at RealOEM
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