So i got some RE adjustable uca's but I have to order a new flex joints, because theyre gone. one calls for a 10mm bolt, the other for a 1/2" bolt...which one do I buy? On RE's website it say theyll both fit, but I want it to be able to use the original bolt...so which size it the OE bolt? The 10mm or 1/2"?

 

I screwed one of mine up when replacing the inserts in my flex joints and ordered one from Chrysler, it had a 10.9 on the head. I'm not 100% sure, but I think that means it is a 10 mm bolt, grade 9

 

I can google that part, but it seems right. Thank you!!

 

Lol

 

x2

10,9 is the metric equivalent to SAE grade 8.

I believe the factory uses M10 bolts for UCA mount.

 

Cool thanks guys!

 

Thanks for the info, like I stated I wasn't sure what the 10.9 meant just knew that is was a 10mm bolt.

 

Grade 10.9 M14x20x120.

 

This..
The 10mm bolts is for the axle side. The bushings is attached to the axle. That end of the control arms is a "fork" so it has no joint. The flex joint on the frame side uses the larger bolt.

IIRC, the joint for the UCA is the same as the RE1660HD frame side, the older bracket for this uses a 10mm bolt, the newer the 1/2"bolt

 

Did the job yesterday, both frame and axle bolts were the 10mm with a 15mm head.