Ball Joint pinch bolt question
I just sourced and replaced new knuckles finally on my 2008 SS and was just curious as mine had mismatched bolts. Does anyone know if the pinch bolts are the same as the base cobalt and hhr's, or happen to have a photo of theirs? Any help would be greatly appreciated! I was able to find and source those bolts but just wanted to be sure before I daily drive it again this winter. After almost a year of rebuilding it after a minor crash, I am so excited to enjoy the fruits of my labor but want to play it safe!
Where did you source the SS knuckles from? If it was an EBay parts yard you might have received the wrong parts, SS is different from LS/LT .
The HHR SS uses a 69.9mm long front lower ball joint pinch bolt, which has a thread size of M10x1.5. 10.9
https://zzperformance.com/products/z...ering-knuckles
Doesn’t include pinch bolts
https://zzperformance.com/products/z...ball-joint-kit
Doesn't include pinch bolts
https://www.overthetopperformance.co...LNF_p_295.html
Doesn’t include pinch bolts
ZZP is the only vendor I could find for SS steering knuckles and ball joints. OTTP for ball joints
The HHR SS uses a 69.9mm long front lower ball joint pinch bolt, which has a thread size of M10x1.5. 10.9
https://zzperformance.com/products/z...ering-knuckles
Doesn’t include pinch bolts
https://zzperformance.com/products/z...ball-joint-kit
Doesn't include pinch bolts
https://www.overthetopperformance.co...LNF_p_295.html
Doesn’t include pinch bolts
ZZP is the only vendor I could find for SS steering knuckles and ball joints. OTTP for ball joints
Last edited by Oldblue; Nov 9, 2025 at 10:09 AM.
Thank you so much! Just what I needed, I was able to get the only set in Michigan off a really clean bad motor 2008 ss at a junkyard not too far from me (and only 92$ for the pair.) ZZP was my next option but luckily the knuckles were perfect! The previous owner had used the wrong size ball joint and overtightened the heck out of them so when I needed the new ball joints I was unable to reuse the old knuckles.
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