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Old 06-09-2021, 09:15 PM
Join Date: Jun 2014
Location: Omaha, NE
Posts: 1,441
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2006 X5 3.0i MT "Stop Buffer" PN 22-31-1-096-727


This part "Stop Buffer" PN 22-31-1-096-727 fell off my car and landed on the driveway.

Car still runs fine and I plan to replace it ($26) anyway...

Does anyone know exactly what its function is?


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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT
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Old 06-09-2021, 11:11 PM
wpoll's Avatar
Join Date: Sep 2015
Location: South Island, New Zealand
Posts: 3,736
wpoll will become famous soon enough
It looks to be what the rear transmission mount actually sits on. I can't see how it could fall off since it seems to support the transmission mount and should be under load.

You can see the stop buffer in place in the support frame here...

Perhaps it is only under load in certain conditions, i.e. when in reverse.

*edit* Thought about this some more and I reckon it is only under load when removing or installing the main mount bolt, #4 - it likely supports the end of the mount and stops it from sitting too low, making inserting/removing the bolt difficult.
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)
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