What part is this?
 

2005 Chrysler Pacifica 3.5L

I have both broken in the rear suspension, I could not find out what part this is called. The only two conclusions I came to was compression link or tension link. If anyone could help, much appreciated, thank you
oh and where can I buy these, and how much do they go for about?
Attachment 1745

It's the compression link.

thank you, would you or anyone know the part #?

Parts catalog calls it a Track Bar. Chrysler service manual calls it a compression link. That's what you call "left hand doesn't know what the right hand is doing".

Mopar Parts Catalog

Does anyone know if this compression link/lateral link is interchangeable with the Chrysler 300?
Rock Auto has the part for $56 instead of paying $180 for the original.
MEVOTECH Part # MS251016

After reading this forum
How To: Remove and Install Compression Link - Chrysler 300 Forum - Forums and Owners Club!
it almost looks identical.

Does anyone know if the compression link / lateral link is an interchangeable part?
Pacifica and 300c parts.
Rock Auto has the part for $56 as compared to $180 for the original part
MEVOTECH Part # MS251016

After reading this forum
How To: Remove and Install Compression Link - Chrysler 300 Forum - Forums and Owners Club!
The part and suspension almost look identical.
Any insight?
thank you.