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BMW X1 (F48) and X2 (F39) Forums General BMW X2 Forum (F39) Lower Stock Intake Box Valve

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      10-12-2020, 06:58 PM   #1
xcelir8bmw
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Lower Stock Intake Box Valve

billnchristy Since you have your Lower Stock Intake Box off of the car, can you take a picture of what is behind the box (i.e. if it were installed, towards the back of the box facing the firewall, but turn around facing the box).

I would really like to see picture under and the side of what this valve is.

There appears to be metal in it like a spring, but very curious.

Thanks in advance!

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      10-12-2020, 07:09 PM   #2
billnchristy
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There’s a tube that heads toward the engine, mine was not connected to anything
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      10-12-2020, 07:12 PM   #3
xcelir8bmw
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Hmm. In the parts diagram it doesn't show that.
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      10-12-2020, 09:44 PM   #4
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This is the emergency relief valve, sometimes called a "snow valve". It's designed to stay closed unless the filter becomes completely clogged, then it opens to admit air. Basically, you never want it to do this.

Notice how there's a small section of the filter protected by the inner channel? That's the clean spot, just in case.
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      10-12-2020, 11:49 PM   #5
xcelir8bmw
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saw a pic on Ebay!
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      10-13-2020, 02:13 PM   #6
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Yes I thought I put up a picture somewhere when I took apart my box. That's the only "clean" part of the filter and it just leads into the engine bay. Same relief valve and location on the X1 as well..
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