Rear spring part # validation
Z-51 spring - 22200944 1 - 2
"alleged" Z06-spring - 22200996 1 - 8
so, I need to determine if the alleged # is correct.
when I compared the two springs side by side, there was no notable differnce in thickness, width, weight, or spring curvature. I did install the other spring and am trying to determine if there is really any difference.
The number I am referring to is actually stamped into the spring itself and believe it is on the passenger side bottom. Yeah, it's a messy job and would require someone to lift their car and crawl underneath - then again, this is one of the most favorite places to be, right?
Also, I noticed the Z-51 spring had a blue dot (quarter size) while the other spring had a yellow dot. Perhaps this is the quick identifier.
thanks for your help
An odd note... when I "stepped" on these springs with all my weight, it appeared the Z06 spring compressed further - in other words, it tended to compress further.
Anyways, I can now start my testing to see if I can decipher any notable difference.
Again, thanks for those that aided in this little mystery of mine.










My car was built Jan 20,2006.
