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I am unable to find the use for these in my MPC for 1929-1950. I have one complete set and another of just the threaded inner and outer pieces. Does anyone know what they fit?
Attachments
Spring eye bushing 1.jpeg (38.32 KB, 113 downloads)
Spring eye bushing 2.jpeg (36.05 KB, 109 downloads)


Brendan
1940 Chevrolet 1/2-Ton Pickup
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Those look like they go with your leaf spring shackles.
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IMG_8564a.JPG (75.02 KB, 100 downloads)

Last edited by UtahYork; 03/18/2026 7:12 PM.

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That is possible. The shaft ends seem to fit properly diameter wise, but as for the length, I don't know what vehicle and year they are for. I am hoping somebody has a book with those numbers in it telling what they fit.


Brendan
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I came up with nothing on the PN, but the spring width on 1/2 ton and 3/4 ton trucks is 1-3/4" and 2" on larger trucks. That should narrow down the application.


Kevin
1951 Chevy 3100 work truck
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I can confirm that the "GRP. 7.504" identifies "BUSHING, Rear spring eye" in Chevrolet Master Parts Books from many year groups. Unfortunately the particular part number "509122" does not show up in any Chevrolet Master Parts Book/Price List that I have access to.

My best SWAG is these are for another GM product line Either Buick, Cadillac, Oldsmobile or Pontiac as I think they would have used the same Parts Group numbering system as the Chevrolets.

GMC used Parts Group# 15.0355 (at least from the early 50's to 60's) for the rear spring eye shackle kit from what I can see in my resources, so these wouldn't have been GMC items IMO.


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I checked the part number against the GMC parts books this morning Dan. No match from 1939 to 1960.


'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
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Thanks for confirming Bill. thumbs_up


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I should probably mention these came from Barry Week's stash if that gives some of you who knew him better any thoughts. I was just hoping to find their use and get them to somebody who can use them if they are not useful to me and my 1940 half ton.


Brendan
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Thanks all for looking into this. I will throw them out on the Antique Automobile Club of America site and see if someone there can ID them. If they are for a GM car somebody there should pick up on it.


Brendan
1940 Chevrolet 1/2-Ton Pickup
Restoring Dad's old truck
In the Gallery Forum
Joined: Sep 2009
Posts: 5,840
Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT
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thumbs_up

Brendan - I've moved this to the Name that part... forum. You can check back in and post here if you get any answers from the AACA folks.


~ Dan
1951 Chevy 3 window 3100
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Originally Posted by klhansen
I came up with nothing on the PN, but the spring width on 1/2 ton and 3/4 ton trucks is 1-3/4" and 2" on larger trucks. That should narrow down the application.

The bushing measures 2" long by 7/8" diameter. Maybe 1/32" less???


Brendan
1940 Chevrolet 1/2-Ton Pickup
Restoring Dad's old truck
In the Gallery Forum

Moderated by  klhansen, Rusty Rod 

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