This is what my flex disc looks like at the diff input yoke. I know I'v been hard on it lately but I think this is more of an age issue. The car is a 2004, you might want to check yours. The third pic shows the part#

 

$41 each at rockauto, they recommend replacing both.

 

the bolts need to be torqued with the car on the ground. that should be fun!

 

I wonder why? Good thing I have a pit to work with

 

Thanks for the tip!

 

Just took my xfire into the shop and they at first told me my whole drive shaft had to be replaced. I put it on a lift and found the same issue. I did a temporary fix by patching it with some JB weld that I had laying around. Thanks for the tip on where to find the part!

 

You should have used duct tape.

 

I picked up the flexdisc this week on the US side for a total cost of $56.76Can. Installing it tomorrow. Pics to come!

 

Here are the pics:

Pic 2 and 3 show the pilot bearing design so no worries, If the disc fails, the drive shaft wont spin right out from under the car

Pic 6 shows the fresh rust from a loose bolt

 

I would assume all XFires, including autos, have this?

 

I see the cracks in the flex disc, and I agree it probably has more to do with age than anything else. But I have a question. Were you experiencing any unusual symptons? Like a clunking sound, or slack in the drive line when going from reverse to drive? Or did you just notice the cracks in the disc when inspecting it, and decided it's better to be safe than sorry and replace it?

 

No, no clunking sound or backlash. I noticed the cracking one day while working on the rear suspension. Now that you mention it, I did sense some vibration when cold which would slowly fade away within 5 mins. The front disc has no cracking at all probably because it doesn't flex much at all. It's a cheap fix specially for the DIY and looking at the design, my old disc probably would have lasted another year this way

 

I could be wrong but I think they are all the same. I'm thinking the SRT6 may be beefier but unsure

 

Thanks Turbo, I've got an 04 so mine probably doesn't look any different.
I've never been terribly impressed with some of the rubber components on my car. Nothing major mind you, wiper blades, gas cap umbilical cord to be specific. But they disintegrated long before they should have. I guess I shouldn't expect the flex disc to be any different.
It would be interesting if some 07 an 08 XF owners would be so kind to check out their discs to see if their's look OK the next time they get under their cars, and let us know how they look.

 

Gonna have to get under my car to see. Hard to believe that you have to torque everything down with weight on the car...good thing I'm a small guy! LOL Any idea what the part(s) cost?

 

I'm having trouble finding the part on RockAuto, I found it for the '01 SLK320 just wanted to check with the forum that this is the part I need

Thanks!

 

Part# is: 210 411 04 15

 

I know this post is a little old, but...

Some sites list a front and rear, but rockauto only lists one. Are they the same front/back?

 

Not 100% sure but I believe so

 

I'm sure that torquing them with the "suspension compressed (wheels UP) would be just fine. Drive-on lift as opposed to a frame lift.