Replacing Drive Shaft

[Harry]

My mechanic found stress cracks in my drive shaft on my 2008 6.0 with 130,000 miles on it. Anybody else had this problem?

[BroncoHauler]

I had a driveshaft u-joint fail on my SMB driveshaft before, but no issues beyond that.


Herb

[Harry]

Did you have to replace the driveshaft?

[BroncoHauler]

Originally Posted by Harry

Did you have to replace the driveshaft?

No, just a u-joint replacement, and a driveshaft rebalancing to be safe.


Herb

[Twoxentrix]

As BroncoHauler, I had the rear u-joint fail - replaced them and also sent drive shafts out to be reconditioned & balanced as a precaution. Not an inexpensive gig, and sometimes costs can almost be equivalent to a replacement (Mine had no issues, but the venture hit the pocket book for close to $1,500).
You certainly don't want to tempt fate since a shaft that breaks while moving can do a lot of damage under the vehicle.

[posplayr]

I assume these are all Aluminum drive shafts that are stressing?

You usually don't need to rebalance when a U-joint is replaced.

[arctictraveller]

Where were the cracks located? Aluminum or steel?

[rizzabove]

Originally Posted by Harry

My mechanic found stress cracks in my drive shaft on my 2008 6.0 with 130,000 miles on it. Anybody else had this problem?

Check out Tom woods driveshafts for a replacement. They can build you a custom shaft. Reasonable price and quick shipping. I have them on my rig. I haven’t had them long enough to give a product review but they look and feel great.