Vintage Oldsmobiles Curved Dash, Limited Touring, Models 40, 53, 66; Series 60, 70, 90

1958 Oldsmobile 88 body to frame insulator

Old Jun 3, 2025 | 07:23 AM
  #1  
GLDN88's Avatar
Thread Starter
Registered User
 
Joined: Apr 2025
Posts: 112
From: Dexter, MI
1958 Oldsmobile 88 body to frame insulator

Good morning, I am needing part number 560958 - the body insulator for a 1957 Oldsmobile 88. Are there good sources for these and the large washers that fasten and isolate the frame to body connections?
Thanks, David
Old Jun 3, 2025 | 06:54 PM
  #2  
BillK's Avatar
Registered User
 
Joined: Dec 2016
Posts: 1,993
From: Beautiful Southern Maryland
https://www.steelerubber.com/body-bo...ion-60-0189-48
Old Jun 4, 2025 | 04:18 AM
  #3  
GLDN88's Avatar
Thread Starter
Registered User
 
Joined: Apr 2025
Posts: 112
From: Dexter, MI
Thanks Bill, that was what I was looking for. Do you know where I can get washers and nuts, or are those simply a hardware store items? Much appreciated, David
Old Jun 4, 2025 | 05:29 AM
  #4  
Olds64's Avatar
Moderator
 
Joined: Jul 2007
Posts: 18,271
From: Edmond, OK
Is the OE hardware rusty and pitted? If not, I'd reuse it.
Old Jun 4, 2025 | 05:49 AM
  #5  
BillK's Avatar
Registered User
 
Joined: Dec 2016
Posts: 1,993
From: Beautiful Southern Maryland
You can probably find the washers at Tractor Supply or somewhere similar. I dont know if they are the same size as later cars like Chevelle etc. Most of the aftermarket suppliers sell kits. But like Olds said if the original stuff is ok just clean it up and reuse it.

By the way all I did was put the part number in Google and plenty of sources came right up.
Old Jun 4, 2025 | 06:08 AM
  #6  
GLDN88's Avatar
Thread Starter
Registered User
 
Joined: Apr 2025
Posts: 112
From: Dexter, MI
Originally Posted by Olds64
Is the OE hardware rusty and pitted? If not, I'd reuse it.
I was working under the hood and noticed that the outside bolt for the body to frame mount at position #1 under the hood looked loose. It was loose and the underside nut (OE was castellated), washer and rubber insulator were missing, so your great suggestion will not work in this case.

My manual sates that the rubber mounts without sleeves should be torqued to 10-25 ft. lb., and the ones with the sleeves to 25-40 ft. lb. The insulators and numbers are 567082 (round), 560957 (square), 560958 (round). all of the lower insulators seem to be part number 560958, with the exception of position #4 where the manual suggests 567082 in one place or 560958 in another. I think 560958 is a simple round isolator with no sleeve. I do not know if the other two are sleeved or if the sleeve is in the assembly and I still cannot tell from the manual where sleeves exist or are not present.

I appreciate any help with this. Thanks, David
Old Jun 4, 2025 | 06:30 AM
  #7  
GLDN88's Avatar
Thread Starter
Registered User
 
Joined: Apr 2025
Posts: 112
From: Dexter, MI
Originally Posted by BillK
You can probably find the washers at Tractor Supply or somewhere similar. I dont know if they are the same size as later cars like Chevelle etc. Most of the aftermarket suppliers sell kits. But like Olds said if the original stuff is ok just clean it up and reuse it.

By the way all I did was put the part number in Google and plenty of sources came right up.
Thanks Bill, in my haste to get a message out, my subject line was 1958 instead of 1957 and I did not specify that I was also looking for the hardware - you are 100% correct about putting the the part number in a search. The link you sent helped me make a decision to order from Steele Rubber Products. Thanks much, David
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dmitchell
Chassis/Body/Frame
2
Aug 22, 2024 08:14 PM
Eric De Guzman
Body work
2
Apr 2, 2019 02:56 PM
421-6speed
Parts For Sale
3
Nov 19, 2012 07:05 PM
sixty9olds
General Discussion
1
Jun 14, 2011 06:43 PM
Gary's 2 442-S
General Discussion
4
Nov 18, 2008 04:08 AM


Thread Tools
Search this Thread

All times are GMT -7. The time now is 03:11 PM.