I encountered this on the motor mount (passenger side above the wheel well) and had a hell of a time getting it loose without damaging it...

Thanks in advance!

 

never seen that before but it might be special case, is it reverse screwed on? or just different being what it is?

 

I havn't seen them before on cars, but I think they are a Pentahead bolts and need a Penta Socket

not sure what size you need
http://www.amazon.com/SEPTLS8759076-.../dp/B00279LD62

 

never seen a pentagon nut before on cars, Not ever German cars.

 

That is the pentastar nut and you don't remove it. It part of the motor mount and you replace the whole mount. If you do need to remove the nut, you may need either a 18mm or 20mm open end wrench.

 

Its a right-tighty thread. I don't remember if I "had to" remove it or not but I do know I had to block the engine from falling before removing it. I was thinking that was the reason Dodge put it there...letting us diy'ers know its a pretty important fastener.

Anyway, haven't searched yet for the proper "pentastar" wrench but can anyone tell me where to get it?

And for reference, no standard or metric socket or open end wrench would fit on this.

 

I came across this nut today while changing a friend's timing belt on a 2000 2.4 Caravan. I removed the entire bracket and it wasn't until I needed to remove the nut (to replace the torn mount) that I realized that it was 5-sided. A fire hydrant wrench works great to remove it (I tend to do a lot of auto work while on-duty at my station). I purchased a M12x1.75 (maybe it was 1.5) nut from NAPA to replace the 5-sided unit. In my opinion, an interfering thread nut would have been a better choice than this odd-ball nut. My $0.02