Chrysler 9.25" Rear Axle Parts, Gears, and Upgrades
Axle Models:
Chrysler 9.25"
1966-2000
Chrysler 9.25"
2001-2010
Chrysler ZF 9.25"
2011 +
Axle Specifications:
Ring Gear Diameter:
9.250
Diff Cover Bolts:
12
Ring Gear Bolts:
12
Axle Spline Count:
31
Axle Shaft Style:
C-Clip
Pinion Diameter:
--
Pinion Splines:
--
Pinion Support:
No
Pinion Nut:
1-5/16"
Pinion Crush Sleeve:
Yes
Carrier Breaks:
No
Dropout Carrier:
No
Oil Capacity:
4.9 Pints
Oil Type:
75W-90
Chrysler 9.25" Rear Torque Specifications:
Pinion Preload New:
14 to 19 in-lbs
Pinion Preload Reused:
6 to 9 in-lbs
Ring Gear Backlash:
.006" to .010"
Ring Gear Bolt Torque:
65 ft-lbs
Carrier Bearing Caps:
75 ft-lbs
Popular Applications:
Dodge Challenger
1973 - 1974
Rear
Dodge Charger
1968 - 1979
Rear
Dodge Dakota
1997 - 2009
Rear
Dodge Durango
1998 - 2009
Rear
Dodge / Ram 1500
1994 - 2010
Rear
Dodge / Ram 2500
1994 - 2000
Rear
Axle Variations:
2000 and Older Axles
Inner Pinion Bearings:
M804049 / M804010
2001-2010 Axles
Inner Pinion Bearings:
NP912904 / NP524102
While the inner pinion bearings look different, they have the same overall dimensions and are interchangeable.
2011 and Newer Axles
A completely different ZF axle with little aftermarket support so far.
Axle Images:
Axle Details
The Chrysler 9.25" rear axle is commonly found in Dodge cars and trucks. They use a 9.25" ring gear and run 31 spline axle shafts. A front version of this axle was offered as well, however, it used reverse rotation gears and 33 spline axle shafts to the internal parts are not compatible.
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