Interesting. When I bought mine they gave me one of each. Didn't look like there was any difference between them and there was nothing on the box to indicate which was for right or left so I went the their site and found the correct part numbers for the right and left sides.

 

This past week I had to have my struts, jounce bumpers and stabilizer bar ends replaced (under warranty, Thank GOD) - because they were all defective. This was the second time on the stabilizer ends.

Anyone else seeming to have this issue? My HHR is a 2007 with 29,000 miles...