Automatic Transmissions (old)

AW4

Possibly the most iconic automatic transmission put into Jeeps was the Aisin-Warner AW4. This was a 4-speed transmission used in the Cherokee XJ and MJ between 1987 and 2001. It is also found in the Grand Cherokee, but only during the 1993 model year. This transmission is most typically found paired with the AMC 4.0L Inline-6 engine and can come in both 2WD and 4WD versions.

AW4 Gear Ratios

1st Gear2.80
2nd Gear1.53
3rd Gear1.00
4th Gear (Overdrive)0.75

The transmission is known for being moderately reliable, as long as it’s maintenance is kept up and it doesn’t overheat. For those who live in hot climates, adding an auxiliary transmission cooler is recommended.

Early models of the AW4 had a 21 spline output shaft for connecting to the transfer case (1990 and earlier), but in 1991 the AW4 was outfitted with a 23 spline output shaft. Keep this in mind when determining which transfer cases will work with your transmission.

Read more about the AW4 transmission here.

Rebuild Kits

Purchase Rebuilt AW4

Engine Fluids

EngineFluid TypeCapacity
AMC 2.5L I4Above 0°F: 10W-30
Below 60°F: 5W-30
4.0 qts
AMC 4.0L I6Above 0°F: 10W-30
Below 32°F: 5W-30
6.0 qts
GM 2.5L I4Above 0°F: 10W-30
Below 0°F: 5W-30
3.0 qts
Renault 2.1Ltbdtbd
VM Motori 2.5Ltbdtbd

Transmission Fluids

TransmissionFluid TypeCapacity
Chrysler A904 3-Speed
Aisin-Warner AW-4 4-Speed
Chrysler 30RH 3-Speed
Borg-Warner T-4 4-Speed ATF Dexron II1.75qts
Aisin-Warner AX4 4-Speed75W-90 GL3 or GL4
10W-30 Motor Oil
2WD: 3.7qts
4WD: 3.5qts
Borg-Warner T-5 5-SpeedATF Dexron II1.75qts
Aisin-Warner AX5 5-Speed75W-90 GL3 or GL4
10W-30 Motor Oil
2WD: 3.7qts
4WD: 3.5qts
Peugeot BA-10/5 5-Speed
Aisin-Warner AX15 5-Speed75W-90 GL3 or GL4
10W-30 Motor Oil
2WD: 3.32qts
4WD: 3.27qts
New Venture Gear NV3550 5-SpeedMopar MT Fluid
SAE 30W Oil
3.3qts

Axle Fluids

AxleFluid TypeCapacity
Dana 3075W-90
75W-140 (towing)
1.26qts
Dana 3575W-90
75W-140 (towing)
1.75qts
Dana 4475W-90
75W-140 (towing)
2.00qts
Chrysler 8.2575W-90
75W-140 (towing)
2.11qts

Transfer Case Fluids

Transfer CaseFluid TypeCapacity
NP207
NP228/229
NP231
NP242

This will close in 0 seconds

4.0L

This will close in 0 seconds