Editing Mopar rear axle spotter's guide

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==Introduction==
There have been several very good Mopar rear axles used through the years. This page will help ID them

==ID by shape==
The easiest way to identify an axle is to look at the cover on the carrier housing: 
*7-1/4" has a 9 bolt rear cover.
*8-1/4" has 10 bolts, evenly spaced. The cover is almost perfectly round.
*8-3/4" has no rear cover. The back of the axle housing is round. The center section is removable from the front of the housing.
*9-1/4" has a 12 bolt rear cover. Rear cover is roughly octagonal (stop sign-shaped).
*9-3/4" has a 10 bolt rear cover. The cover is wider on the driver side.

==Casting numbers==
These may not be all the casting numbers that were ever used on the various axles, but are a starting point:

;7-1/4 
:2070051 
:3507881 
:3723675

;8-1/4 
:2852905 
:3723598 
:3723599

;8-3/4 
:1820657 (small pinion shaft, up to 1964) 
:2070741 (small pinion shaft, 1965 to about 1972) 
:2070742 (large pinion shaft, 1957 to 1968) 
:2881489 (tapered pinion shaft, 1969 to about 1974)

;9-1/4 
:3507890 
:3507891 
:3723199





==Resources==


 
 
 
 
[[Image:mopar axle.jpg]]

[[Category:Rearend]]
[[Category:Identification and decoding]]