Hey Tim. Sounds like you have the Monroe E-Z Ride seat, which was an optional seat sold by dealers. There is some info in the archives from folks who have tried to find a replacement for the shock absorber. Here's an original ad for it: Here's a consolidation of info supplied by other forum members who have refurbished theirs:
Monroe E-Z-Ride Comfort Seat Option I tried last spring to find this shock with no luck. My shock had stamped the following information:
Monroe Auto Equipment Company
Monroe, Michigan USA
patent number 2,004,380 & 2,078,364
10B8
OF6-E1
18144 Dimensions of the shock follow:
6.38� compressed center to center
8.00� extended center to center
2.06� large cover diameter
1.68� small body diameter Retaining ends are as follows:
1.44� OD
1.00� BORE
0.94� WIDE The number for Monroe is 1-800-879-0540 I also tried a couple of different auto stores with no luck. I finally just painted the old one and put it back on. I did replace the rubber bushing with some pieces I got from NAPA. The rubber bushings were 2-piece rubber snubbers, number 215 for 0.62 shoulder bolt. I did have to modify the rubber pieces to fit the taper inside of the shock mounting bore. The Monroe E-Z Ride spec sheet I have doesn't list any dimensions. But it does have part #'s.
9N/8N #16041
NAA #16074 Monroe also made seats for: AC, Case, Corbitt, Co-op, Custom, Farmcrest, Ferguson, Gibson, IH, Inter-Continental, JD, Long, Massey-Harris, MM, Norse, Ostenberg, Oliver, & Sheppard. The brochure states they sold over 600,000 in 4 years.
Hope this helps..... ..... .Ed
'52 8N475798
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