dailydriver

Does anyone know where the 'break point' (in either build dates, or VIN numbers) is for the stock 10 bolts, and what the two part numbers are??

cyberkill

I've been working on a writeup, but since I haven't finished, it's still not posted.

In any case, to answer your question - I don't know what the date or vin# is, but I do have part numbers from my writeup (thank god I decided to write it as I went instead of waiting on it)...

Timken 8610 - Pinion Seal (For 1998-2000)
National 710474 - Pinion Seal (For 2001-2002)
(See NOTE2)


NOTE2: The design of the yoke changed in 2001. Apparently, some 2001s are said to still have the older version, and some have newer ones. The shaft of the yoke that goes into the housing (through the oil seal) is slightly larger in diameter than the older ones. This means that your oil seals will be different model numbers, and if you get a Pinion Yoke Repair Sleeve, it'll be a different part number as well. The appearance of the oil seal you have installed will be the dead giveaway. The newer models have a collar placed inside the yoke. I've read that people can remove the collar (pry it out with a flathead screwdriver) from the yoke and use the older design, but with National brand seals being fairly accessible, I'd just buy the right kind for your car. Timken and the one that comes from the Motive Installation Kit (and all the other installation kits I've seen) come with the older design.

dailydriver

^^^THANKS!!

S8ER95Z

iTrader: (3)

Another 2001 car here, bought the 2nd design and it leaks. Thanks for the info guys, sounds like I have the old design. 😞

6spdg37s

iTrader: (1)

may be having the same issue. definitely leaking. but maybe the yoke diff in size

S8ER95Z

iTrader: (3)

I went in with the original seal and it was completely different. The old seal worked perfect for me.

6spdg37s

iTrader: (1)

my parts guy sent me the wrong seal so I had 1 of each style and the difference was definitely noticeable so im pretty confident i put the correct seal in just maybe got damaged in the process or something of that sorts

S8ER95Z

iTrader: (3)

Entirely possible, good luck hopefully a new one is all you need.

PureWS6

I have this issue as well with my 2001 for several years. I need to open it back up and try yet another seal install - this will be the 4th.

6spdg37s

iTrader: (1)

its still leaking ...even with the new seal i just beat the **** out of it until my rear blows and then will do a 9" or 12 bolt