The MB/GPW used the Spicer 23-2 full floating axle with 4.88 gears.
The first 3453 CJ-2As also used the Spicer 23-2, but with 5.38 gears.
After that, the CJ-2As used the Spicer 41 semi floating with the dust
cap you describe.
Todd Paisley
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'41 Willys MB "slat-grille"
'42 Ford GPW "script" (very rough)
'44 CJ2 Agri-Jeep (#12 of 12 prototypes built for testing
whether Jeeps had a civilian use!) (restoration
in progress.)
'45 CJ2A (68th CJ ever built!) (Just a pile of parts...)
'46 CJ2A (early column shift)
'46 CJ2A (late)
'47 CJ2A (Farm Jeep with 3-point Monroe hydraulic implement lift)
'48 CJ2A (trencher)
'48 CJ2A (one of the 9000 with a left side spare tire mount before
Willys-Overland decided to move it back to the right side.)
'64 CJ5A (Tuxedo Park Mark IV) (column shift with front bench seat option)
'64 Wagoneer (with IFS option) (39,000 original miles)
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