I havent had the time to set up rear preload,backlash,,markings, an all on the 01 2wd 3.9.
If i were to swap it out for a identicle at the junkyard ,i saw a few days ago, how would i identify the match?
The vin...or # of holes on differential cover? I have 8.25 with 10 hole cover.
Would a vin lookup be the best way to match up?
What else is important on the swap an whats the newest year I can still use..
Maybe theres a stamp on it too that helps .
Thanks

 

The easiest way would be to look for the build sheet in the vehicle. Any tags on the differential would likely be missing.
The 8.25 or 9.25 will fit your frame. The driveshafts can differ though - even if it's from another 8.25.

The mounts differ on 2wd and 4wd. Up until 2004 should be identical. The brakes can vary as well - some were drum and some were disk.

 

Is a 98 Ram 1500 differential interchangable with a 00 Durango?

 

I did see a tag on it.Ill try to get tbe #s .
Where is the build sheet ?
I will look for the similar setup 8.25 base with the same mounts .
A 10 bolt diff on 2wd base model should match up.. I wasnt sure if internal set up differed .

 

The 8.25 came with two ratios, 3.55 for the auto and 3.23 for the manual. The 9.25 came with three ratios, 3.23 for manual, 3.55 for automatic, 3.92 was optional.

8.25 and 9.25 are different driveshaft length (9.25 pinion sticks out a half inch further)

8.25 "should" be same pinion flange position for both auto and manual - Just make sure you get the right drive type. Some years used a U-joint and some used a companion flange.

2wd is spring under axle, 4wd is spring over axle

 

Thanks . Thats a GREAT TIP!
heres a tag i found .says 3.9 in corner.


Theres my type

 

I saw one but the wheel base or drum an brakes looked bigger .Is that the 9.25 one?
An are any of the ones on durango or rams identicle to mine?

 

I think the full size truck axles will be wider. Durango axles should be very close, if not exactly the same.

 

Heres the one im looking to get..does this tell much .?


an what if its LSD . I need to turn wheels an check..
Everything looked identicle ..so hopefully no issues .

 

Here's what I get.
Equipment Listing
VIN 1D7FL16K84S554595
Vehicle Description 2004 DODGE DAKOTA P/U REGULAR CAB 4X2


Monotone Paint
136 Amp Alternator
600 Amp Maintenance Free Battery
Pwr Disc/Drum Rr Anti-Lock Brakes
Next Generation Front Air Bags**
Passenger Air Bag On/Off Switch
Passenger Assist Handle
Driver Assist Handle
Corporate 8.25 Rear Axle
Tinted Glass Windows
Tinted Windshield Glass
Front Door Tinted Glass
Rear Fixed Window
Rear View Day/Night Mirror
Driver Side Sun Visor
Passenger Side Sun Visor w/Mirror
5 X 7 Mirrors
Air Conditioning
Instrument Cluster w/Tach
120 MPH Primary Speedometer
Var Intermittent Windshield Wipers
Dual Note Electric Horns
12V Power Outlet Mounted in IP
BLACK - BADGE - DODGE, TAILGATE
STANDARD EQUIPMENT
1 09/16/21*
BLACK - Badge - SXT
EXTERIOR COMPONENT COLOR
Front Dome Lamp
Halogen Headlamps
CHMSL Lamp
Black/Gray Rear Bumper
Gray Front Fascia
Front License Plate Bracket
Black Windshield Moldings
EVAP Control System
20 Gallon Fuel Tank
Bright Silver Metallic Clear Coat
4 Speakers
Fixed Long Mast Antenna
Power Rack and Pinion Steering
Luxury Steering Wheel
Heavy Duty Suspension
Front Heavy Duty Shock Absorbers
Rear Heavy Duty Shock Absorbers
Front Stabilizer Bar
Full Size Spare Tire
Tire Carrier Winch
Steel Spare Wheel
Pickup Box
Brake/Park Interlock
Build To U.S. Mkt. Specifications
GVW Rating - 5000#
U.S. Dealer Retail
Zone 42-Detroit
2 09/16/21