The greatest mistake was pressing the bearings on before verifying that the axles were right.  Over the years I've ended up with so much stuff that was wrong that I now take nothing for granted.  On axles I would check that the splines fit into the diff, that the bolt pattern was right, that the drum or disc fit the hub, etc., etc. before doing anything with them.

I don't think Yukon is saying the parts old on Amazon are not theirs.  I think they are saying that they are no responsible for how a third party listed their parts on Amazon, and frankly they're right.  However, if the info on their website and the Amazon site are exactly the same you may have a case, as it would appear the Amazon site just copied theirs. 

A final option would be to talk to your credit card company, assuming that's how you paid.  The only downside there is you don't want your method of payment blacklisted in the event they refund your money.
 

BobE wrote:

MS wrote:

The bottom line is you have to supply several critical pieces of info when ordering axles.

Axle length
Spline count
Flange diameter
Hole in the flange for bolt access
Indexing hub diameter
Bearing size
Brake gap
Stud pattern/hole size.

Failure to be sure you are ordering every one of those items to fit your requirements will typically result in getting an axle that does not fit your application

I had a 9” housing shortened and a new set of axles to fit the shortened housing by Moser a few years ago. The housing width was correct, but the axles sent were for the original housing’s width.  I called Moser, they checked the build sheet, agreed it was their error, and paid for the shipping return, and for the shipping of the proper axles.

 

I had the same experience, Moser made a mistake on the brake offset, but they were awesome and made it right. 

To the OP remember you also have Amazon you can contact, these axles were not described correctly so if the vendor themselves is not willing to work with you Amazon usually will step in if they have to.

Good luck, sorry this turned out to be such a PITA.
 

Greg B wrote:

I looked at the Amazon Yukon store website. It looks as if they sell axles to fit stock rears as if they were on the original car. Before we blame them... way more info would be needed. 'Jus sayin.

Agreed, but the axles came with a 5x5.5 truck bolt pattern, seems like there's no way they could ever be for a Mustang.
 

Greg B wrote:

I looked at the Amazon Yukon store website.   It looks as if they sell axles to fit stock rears as if they were on the original car.   Before we blame them... way more info would be needed.  'Jus sayin.

 
Since Lovetoflyguy didn't say, I'd expect him to have stock axles.

Greg B wrote:

I thought I remember him posting something about a smooth rear 9". To me that suggests early Ford rear.

I assumed its a mod job.

Yes he did, early model Ford "big car" 9" rears were a popular bolt in for Mustang's when you could find them.
 

I think it would be a good idea for you to visit Moser or Strange web site to see where pertinent rear end measurements are taken. I can see how a supplier would be confused if those diagrams were presented.

Looks like your small bearing 9” would come close to being able to use stock 8” axles from a 65-66 tear end.
You need to know what brake gap your crown vic brakes require.

TKOPerformance wrote:

The greatest mistake was pressing the bearings on before verifying that the axles were right.  Over the years I've ended up with so much stuff that was wrong that I now take nothing for granted.  On axles I would check that the splines fit into the diff, that the bolt pattern was right, that the drum or disc fit the hub, etc., etc. before doing anything with them.

I don't think Yukon is saying the parts old on Amazon are not theirs.  I think they are saying that they are no responsible for how a third party listed their parts on Amazon, and frankly they're right.  However, if the info on their website and the Amazon site are exactly the same you may have a case, as it would appear the Amazon site just copied theirs. 

A final option would be to talk to your credit card company, assuming that's how you paid.  The only downside there is you don't want your method of payment blacklisted in the event they refund your money.
 

I agree completely. I take full responsibility for assuming this would be a simple "buy a set of axles for a X car" when I knew I was making a significant mod with an unknown housing. I think I'll just chalk this up to an expensive learning experience and move on. I'll put the Yukon axles up for sale on CL or fleabay until they sell and hopefully recover most of my money.

LoveToFlyGuy wrote:

MS wrote:

I think it would be a good idea for you to visit Moser or Strange web site to see where pertinent rear end measurements are taken. I can see how a supplier would be confused if those diagrams were presented.

Looks like your small bearing 9” would come close to being able to use stock 8” axles from a 65-66 tear end.
You need to know what brake gap your crown vic brakes require.

I'm definitely doing that! I know my diagram is a little confusing, and some of the shorter measurements don't add up exactly, but I'm confident of the longer measures, and think I have most of the numbers that I need to give them.

There are a couple of CV's in my local boneyard, so I think I'll get over there and take some measurements around the brakes and axle hub, and maybe even bring an axle home to play with if I can get one out without too much trouble.

 
Education is not free. I'm purdy sure we've all made mistakes buying stuff for these cars. I can't tell you how many duplicate parts I've bought, only to find out way past the return window that I've got 3 sets of mufflers in storage.

I bet John (owner) could tell you what 9” axle housing you have.

https://johnsindustries.com/

He only does 9” housings and axles.
He will shorten axles, just not housings.

His business consists of making 9” housings for various major companies, custom shops, and racers (1/4, 1/8, dirt, etc).

I found out about him last year while talking to the owner of the local Drive-In restaurant.
Restaurant owner had a complete 9” housing built for his race car.

Be ready to answer questions. Nice guy too.

Last edited by Nos681 (5/30/2023 7:54 PM)