Guess the part! Mystery rubber "dome" fell out from the undertray

[Almuliman]

So this thingy dropped out the other day when I removed the tray under the engine. I've been perusing RealOEM for a visual ID, but haven't seen it on any of the diagrams I consider likely suspects.

Anybody know what it is? Where it came from? It's about an inch across (forgot to have something else in the picture for scale).

[Mike Whitney]

Pretty sure that's a rubber foot for the airbox. It screws onto a post on top of the left frame rail under the airbox and the box has a "hole" that slides onto this when you install it.

[Mike Whitney]

https://www.realoem.com/bmw/enUS/sho...diagId=13_1165

"Rubber buffer", #9

[Almuliman]

Originally Posted by Mike Whitney

https://www.realoem.com/bmw/enUS/sho...diagId=13_1165

"Rubber buffer", #9

THANK YOU! I hadn't looked that high up on the engine. Yet. I figured my next step if nobody here recognized it was to look through every d*** diagram on RealOEM. Now I don't need to

[jdt10768]

yes, these are like 10 mm sockets - they just disappear

[Almuliman]

Originally Posted by Mike Whitney

Pretty sure that's a rubber foot for the airbox. It screws onto a post on top of the left frame rail under the airbox and the box has a "hole" that slides onto this when you install it.

We have a confirmed winner! Had the airbox out this weekend to make room for replacing the upper radiator hose, noticed the box was a wee bit wobbly, noticed the dome-shaped indent on the bottom and Eureka! Remembered your post. All is safely back where it belongs now and I have one less random doohickey on the shelves.

[WrathOTM]

Lol, I "lost" mine some time ago and then like a couple weeks ago when I was under the car the little rubber buffer came bouncing out from points unknown and just appeared on the floor right next to me.

Least you got your's reinstalled. I just might have to clean my air filter just for the hell of it to reinstall mine.