It looks like the outer diameters of the Okie Bushings are:

1937-1939 = ?

Chevs of the 40s

1940-1950 = 1.728" OD bushing side
1940-1950 = 1.715" OD seal side

1951-1954 = 1.755 OD seal side
1951-1954 = 1.762 OD other side
(are these listed "backwards", incorrectly?)

https://www.chevsofthe40s.com/images_media/instructions/INS_027.pdf

Classic Parts:

1940-1950
1 3/4 outside diameter
1 3/8 inside diameter
5 3/4 in length

1951-1954
1 11/32 inside diameter 5 3/4 in length

Jim Carter states: "No need to remove drive shaft or disassemble differential. Just drive in this new assembly after removing the old front bushing and seal. The secondary rear original bushing and seal will be pushed further back on the drive shaft and no longer used. "

Does that just serve to further confuse?
Jim Carter Okie Bushing Installation

Last edited by Gdads51; 11/25/2025 12:32 AM. Reason: fix link
Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.