I found this on the ground about 3 feet away from the front of my 2012 Rubicon after changing the oil, not sure if it came from the Jeep and dont remember seeing it before I started to change the oil, I park in an assigned spot in a busy garage used by my entire apt complex. Does this look familiar to anybody, I looked very carefully in and around the engine compartment and it doesnt look like it belongs anywhere.

 

Perhaps endcap to your Rubirails?

 

Judging by the design and size, looks like a trim piece, maybe interior. Not like anything I've seen on a JK. Either way, doesn't seem to be a needed part by the looks of it. That's my 2 cents on it.

 

That looks to me like a clutch pedal cover.

 

It looks to me like it came from the end of an extruded tube of the same shape. You can see where the tube walls left a mark around the inside perimeter.

 

Maybe the rubber cover for a foot-activated parking break from another vehicle?

This is kinda becoming like a fun game to me.

 

Like RedRockJeeper said, it's an endcap to one of your rock rails.

 

It's the cover to the "flux capacitor", Duh?

 

Hitch cover?