Going crazy with cv axle nut

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Going crazy with cv axle nut

Postby Domspun » Tue Oct 26, 2021 10:57 am

Lost a CV axle nut, wanted to replace it, but everywhere they all seem to have a M22x1.5 nut listed for it. Seem like the size is M19x1.5. Is there a different size between the OEM CV axle and aftermarket one?
The part number is 90179-22020, anybody know if it is M19x1.5?

This is driving me nuts!
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Re: Going crazy with cv axle nut

Postby CMS-GT4 » Tue Oct 26, 2021 5:26 pm

There are two oem axle nut sizes. Your best bet is to take a caliper and measure the diameter of the threaded section so you know which one you need.
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Re: Going crazy with cv axle nut

Postby Domspun » Tue Oct 26, 2021 8:12 pm

CMS-GT4 wrote:There are two oem axle nut sizes. Your best bet is to take a caliper and measure the diameter of the threaded section so you know which one you need.


Got a GT-Four for 14 years and didn't know that, crazy.
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Re: Going crazy with cv axle nut

Postby Domspun » Tue Oct 26, 2021 10:48 pm

CMS-GT4 wrote:There are two oem axle nut sizes. Your best bet is to take a caliper and measure the diameter of the threaded section so you know which one you need.


I measured 17mm inside the nut. The M22 nut has 20mm inside, so I assume it's a M19?
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Re: Going crazy with cv axle nut

Postby Domspun » Wed Oct 27, 2021 11:28 pm

Found a M19x1.5 nut, it fits!
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Re: Going crazy with cv axle nut

Postby Roreri » Thu Oct 28, 2021 1:18 am

Good find! As we proceed into the realm of unplanned for longevity for our cars, it's becoming more and more a science project.
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Re: Going crazy with cv axle nut

Postby FC Zach » Thu Oct 28, 2021 10:46 am

It's my understanding that the facelift models (92 & 93) were fitted with the larger diameter.
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Re: Going crazy with cv axle nut

Postby CMS-GT4 » Thu Oct 28, 2021 1:36 pm

I have heard a few different things on this forum about it. There were some other threads on the subject. I have heard that even it was 165s that had it. My 92 originally had the larger nuts and as I have picked up remanufactured axles I have gotten some with the smaller nut. I think currently I have 1 of each on the front.
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Re: Going crazy with cv axle nut

Postby Domspun » Thu Oct 28, 2021 3:28 pm

FC Zach wrote:It's my understanding that the facelift models (92 & 93) were fitted with the larger diameter.


Mine is a 92, but I doubt the axles are original, I replaced one 10 years ago and the other was probably replaced in Japan not long before, looked new.
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Re: Going crazy with cv axle nut

Postby FC Zach » Thu Oct 28, 2021 3:48 pm

Domspun wrote:Mine is a 92, but I doubt the axles are original, I replaced one 10 years ago and the other was probably replaced in Japan not long before, looked new.


Possibly. . . This is just something I heard/read somewhere over the years and have no clue of its validity but it sounds good to me. When I replaced an axle on my 92 and received a small diameter replacement, I initially questioned it but used it anyway. Years later I replaced it again due to a boot leaking and the warranty replacement was a large diameter.

For anybody that might be picky, order a few of each and pull the desirable sizes from the shipment and return the others ;)
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