Rear axle differences between early and late 3rd gens? - Page 2 - Toyota 4Runner Forum

St Runner · 08-20-2019, 07:42 PM

Thanks for being the test subject, glad to know it will work. I think the difference is the gear on the axle shaft that sends the signal to the abs.

thezentree · 08-20-2019, 07:49 PM

Quote:

Originally Posted by St Runner

Thanks for being the test subject, glad to know it will work. I think the difference is the gear on the axle shaft that sends the signal to the abs.

Yeah it was way too hot and I was way too impatient for me to get out the calipers haha

T4R2014 · 08-21-2019, 03:58 PM

Running a 2002 axle in my 1998. The 1998 ABS sensor plugged into the 2002 axle.

ToyotaBrah · 08-27-2019, 07:46 AM

Quote:

Originally Posted by thezentree

Well, near as I can tell, the axleshaft/brake assemblies are totally interchangeable, or at least later assemblies will work in an early housing.

I put my 01 axles in the 97 housing (with the new-style seal) and with the "grease test" the seals look like they're riding in the same place on the 01 retainers as they are on the 97 retainers.

I reused my 01 ABS sensors with the 01 axles, and got no ABS lights. The 97's ABS sensors looked like the same part to me.

Awesome, thanks for the update! I can't wait to do the swap on mine.

Taylor20 · 08-27-2019, 08:08 AM

If I only I had seen this earlier. I swapped a 98 axle in my 02, only changed out the rear brake lines on the axle. Everything else was plug and play, minus the locker harness, and a couple small brackets.

thezentree · 08-27-2019, 12:13 PM

Quote:

Originally Posted by Taylor20

If I only I had seen this earlier. I swapped a 98 axle in my 02, only changed out the rear brake lines on the axle. Everything else was plug and play, minus the locker harness, and a couple small brackets.

No big deal, I wanted to use my 01 axle shafts anyway since the 97s backing plates were trashed. I’ve got about 200 miles on this Frankenstein setup so far and it seems to be working just fine!

STI_MECE · 10-03-2019, 10:07 AM

I am in the middle of this same process as well. My 2000 4runner is leaking at the rear seals.

I pulled 2 x inner axle shafts from a 2002 4runner.

If I read this correctly, the wheel bearings, and seal that goes around the wheel bearing are, for lack of a better word, year specific (to a certain extent). In other words:

NOTICE THE BEARING HOUSING IS THE SAME PART NUMBER, BUT WHENEVER I WAS LOOKING AT THE PART NUMBER FOR 2002 IT ONY WHEN DOWN TO 2001. AND WHEN I SEARCHED 2000 IT ONLY SHOWED FOR 1996-2000

1996-2000

Wheel Bearing: 90363-40020-77
Axle Shaft Outer Oil Seal: 90313-48001
*Wheel Bearing Housing: 42421-35030 (or not needed at all)

2001-2002

Wheel Bearing: 90363-40068
Axle Shaft Outer Oil Seal: 90313-54001
*Wheel Bearing Housing: 42421-35050 (or not needed at all)

1996-2002

*Bearing Retainer: 42423-20010
*Snap Rings for Retainers: 90520-36045
Inner Axle Oil Seal: 90310-50006
Bearing O-Ring: 90301-88077

The ones marked with * are optional depending on how you go about this job.

In short, the parts that are year specific that interface with the outter most portion of the axle.

Hope this helps someone....Time for more partsss

GG2000-4Runner · 01-19-2024, 09:44 PM

Quote:

Originally Posted by STI_MECE

I am in the middle of this same process as well. My 2000 4runner is leaking at the rear seals.

I pulled 2 x inner axle shafts from a 2002 4runner.

If I read this correctly, the wheel bearings, and seal that goes around the wheel bearing are, for lack of a better word, year specific (to a certain extent). In other words:

NOTICE THE BEARING HOUSING IS THE SAME PART NUMBER, BUT WHENEVER I WAS LOOKING AT THE PART NUMBER FOR 2002 IT ONY WHEN DOWN TO 2001. AND WHEN I SEARCHED 2000 IT ONLY SHOWED FOR 1996-2000

1996-2000

Wheel Bearing: 90363-40020-77
Axle Shaft Outer Oil Seal: 90313-48001
*Wheel Bearing Housing: 42421-35030 (or not needed at all)

2001-2002

Wheel Bearing: 90363-40068
Axle Shaft Outer Oil Seal: 90313-54001
*Wheel Bearing Housing: 42421-35050 (or not needed at all)

1996-2002

*Bearing Retainer: 42423-20010
*Snap Rings for Retainers: 90520-36045
Inner Axle Oil Seal: 90310-50006
Bearing O-Ring: 90301-88077

The ones marked with * are optional depending on how you go about this job.

In short, the parts that are year specific that interface with the outter most portion of the axle.

Hope this helps someone....Time for more partsss

Don't forget the different backing plates. There are a couple of differences, but the most important one is the hole for the adjuster. It is on the other side. I made a comparison table with images in this Google Doc: Rear axle-hub-and-brake assembly comparison - Google Docs.

By the way, production on the new axle and related parts started in 08/2000. Check your door sticker to see which month your 2000 was made to see if you have the old or new designs.

Also, another difference I haven't seen mentioned is the with the wheel lug studs. They changed the design slightly in 09/1999. I don't know if they are backwards compatible, but I don't see why not.

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