Hey guys.. So I have a 2005 Infiniti G35 with SPC adjustable control arms. The place I bought it from did not disclose this (only the struts and springs) so I took advantage of this and they're offering to cover the cost of the work and part to replace the bad ball joint in my front upper control arm. Only problem is, Infiniti doesn't know the part number for these control arms and I don't feel like wasting all of the money they're offering me buying multiple ball joints to get it fixed. Does anyone out there know what SPC adjustable control arms fit the G35 and if the ball joints fit in the different models? I literally just need to find the product number for my SPC adjustable control arms so I can buy a replacement ball joint for around $85 from what I saw online.


Thanks in advance guys and I hope this isn't specifically covered somewhere else. I wish I had more info but this is all Infiniti knew.

Contact spc
they help
I had to buy new ball joints also

Thanks man I will do that. What type of info did they need from you to get it figured out?

no problem. i just told them the model arms i had and they were able to pair them up. very straight forward

Only problem is Infiniti cannot tell me what model of control arm it is and I don't know haha

Can you get pictures?

Yeah I will try and get some later tomorrow!

Here you go: https://conceptzperformance.com/Cart...on.php?II=7881 Part #: 721204
CZP is a vendor here.

The part number of your SPC arms is most likely Part# 72123 https://conceptzperformance.com/Cart...on.php?II=4358

You are the man!! I assumed SPC only had so many sets of control arms for my car. Says that ball joint will fit two different control arms so I feel like my chances are pretty good. Thanks a lot!

Yeah, after looking again, it looks like 72123 & 72125 are both G35/350Z Camber arms, just one is an updated design. You should be good with that ball joint.

Yupp! I called that vendor and confirmed from his knowledge it should work too. Already placed my order. Thanks again!