Pretty sure I've got a wheel bearing going. Looked up autozone for hub assembly. Can somebody please explain why there is a difference between coarse and fine thread studs? Basically it amounts to $100+ Not sure what I have because I haven't looked, but would I be able to reuse my old studs and buy the cheaper coarse threaded hub assembly if I have the more expensive fine threads?

Wheel Bearing/Hub Assembly-Front | 2004 Ford F250 Super Duty P/U 4WD 10 Cylinders S 6.8L EFI | AutoZone.com

 

by no means am I saying that you can't, but your studs shoud be pressed into place on the hub. So removing the original and putting them into the new part is a no in my opinion. Not saying that you can't buy new fine studs and replace the coarse ones though....

But me personally, I would just buy the correct wheel bearing and be done w/ it.

 

What is your year, model, and 4wd configuration?

 

2004 Superduty 4wd V-10, 4 wheel antilock

 

I believe 99-02 superduty uses a 14x2.0, and 03 up uses the 14x1.5 .

 

I don't have a problem buying the correct assembly, but my concern is why is there a $100+ difference between coarse and fine threaded studs? Doesn't make sense too me and why is there even a difference at all?

 

I'm just a layperson what is the 2.0 and 1.5? Diameter of studs?

 

Thread pitch, which is metric on these.

 

Your '04 has fine studs, they are 14mmx1.5, earlier studs (pre '02 I believe) are course and are 14mmx2.0.

Look at Rockauto.com, they have the part you need for around the same price as the cheaper one listed at Autozone. Definitely go with Timken brand.

http://www.rockauto.com/catalog/moreinfo.php?pk=1118918

 

I believe you are correct. Earlier trucks use the coarse thread, newer fine thread.

 

from an engineering standpoint, fine threads tend to be stronger than coarse threads.
that said, it really depends on the thread specs, and method of thread forming.

i would imagine that the $100 difference has more to do with the internals of the wheel bearings rather than the threads on the studs

 

I was just going to suggest Rock Auto

 

And don't forget they have 5% off to forum members, here is the thread with the current code:
https://www.ford-trucks.com/forums/1...04-2011-a.html

 

They should be the same price no matter with thread pitch you have. The price difference is probably due to ABS vs non ABS. A lot of the earlier models didn't have ABS on the front so replacement hubs were less expensive. Some vendors sell the ABS hubs with the sensor so they cost more than the non-ABS in their system. Other vendors just sell the hub so the price is about the same either way. Not sure what Rock Auto has. I got my hubs from NAPA about 100k miles ago and they have been holding up ok. I think they were about $280 apiece though...

 

Thanks for the help. I'm definitely a Timken guy, just replaced one on my wife's trailblazer and the lady at Autozone told me her husband forbids her from bringing home Duralast even with her discount, lol. Off to bed but I will definitely check out Rock Auto. How do you order from them through here or is there a discount code?