1988 Rear Spindle Washer? (Page 1/1)
Noah3.0 MAY 25, 05:27 PM
Hi all,

I'm working on getting the rear end of my 1988 GT put back together. Looking in the service manual, the instructions for reassembling the rear knuckle include a step stating to torque the hub nut and washer -- I've got the hub nuts that came with my replacement CV axle, but I don't remember pulling a washer off either side when I removed the knuckle to begin with, and RockAuto and the local parts stores don't show a part match for a rear spindle washer.

Is there in fact supposed to be a washer between the hub nut and the hub in the rear? If so, does anyone have a part number / dimensions? Closest I was able to find was a Dorman 618-026 which matches the Cutlass Ciera that uses the same wheel hubs, but I'm not 100% sure on it

Thank you

[This message has been edited by Noah3.0 (edited 05-25-2025).]

Vintage-Nut MAY 25, 11:40 PM

quote
The new bearing hub has a new 30mm nut, discard the old one but save the washer that was behind the nut as this will be re-used




How to replace the rear bearing hubs, with pics.
https://www.fiero.nl/forum/Forum9/HTML/000022.html

PS - This thread photo shows the 1984 rear hub

*Dorman 618-026 Rear Spindle Nut Washer Fits 1984-1987 Pontiac Fiero

Perhaps '88 doesn't have the washer...?

[This message has been edited by Vintage-Nut (edited 05-26-2025).]

Noah3.0 MAY 26, 01:35 PM
Interesting -- I found a place to get that washer from so I suppose I'll buy a couple and see if it works then. Feels better to have something there even if it might not be strictly necessary.
Raydar MAY 26, 09:49 PM

quote
Originally posted by Vintage-Nut:
...
Perhaps '88 doesn't have the washer...?




88s also are supposed to have the washer. At least all of mine have.
Vintage-Nut MAY 27, 12:59 AM
Thank you Raydar for confirming; can you also confirm if the '88 uses the same washer as the '84-'87?
Patrick MAY 27, 03:57 AM

quote
Originally posted by Noah3.0:

1988 GT... Is there in fact supposed to be a washer between the hub nut and the hub in the rear?



The same rear hub is used on all Fieros from '84-'88... so there'd be no reason for the 88's not to also have the spindle washer.
css9450 MAY 27, 08:30 AM

quote
Originally posted by Patrick:

The same rear hub is used on all Fieros from '84-'88... so there'd be no reason for the 88's not to also have the spindle washer.



I'd bet there's probably a bunch of various GM models that use the same washer also. Maybe not the larger cars, but anything with a 5x100 bolt pattern probably uses the same washer.

Noah3.0 MAY 29, 08:15 PM
Hi everyone,

Thank you for the help. I got a set of the Dorman washers I mentioned above -- as expected, even though they say applicable to 1984-1987, they seem to work just fine on the 1988 as well.