Specifications

1985-86 Bellhousing
1994 & newer
Bellhousing
JEEP UNIVERSAL - MANUAL TRANS:
Vehicle ID Year Application
Peugeot BA 10/5 5 Sp 1987-89 Standard on some Models-21 Tooth
AISIN AX5 5 Speed 1987-02 4 Cylinder models-21 Tooth
AISIN AX15 5 Speed 1989-99 4.0L 6 Cylinder engines-23 Tooth
NV3550 5 speed 2000-04 4.0L 6 Cylinder engines-23 Tooth
NV1550 5 speed 2003-04 2.4L 4 Cylinder engines
NSG-370 6 speed 2005-07 4.0L & 2.4L engines-23 Tooth
JEEP UNIVERSAL - AUTOMATIC TRANS:
Vehicle ID Year Application
Chrysler 904 3 Speed 1987-02 Wrangler w/4 Cyl.
Chrysler 999 3 Speed 1980-86 CJ7 & Scrambler 6-258
Chrysler 999 3 Speed 1987-91 Wrangler 4 & 6 Cyl.
Chrysler 32RH 3 Speed 1992-93 Wrangler 4 & 6 Cyl.
Chrysler 32RH 3 Speed 1994-02 Wrangler 4.0L
Chrysler 42RLE 4 Spd. 2003-07 23Spl.Jeep TJs 4 & 6 Cyl.
WAGONEER, CHEROKEE/COMANCHE:
Vehicle ID Application
Manual Transmissions
AISIN AX4 4 Speed 1985-87 Cherokee w/4 Cyl.
AISIN AX5 5 Speed 1985-02 Cherokee w/4 Cyl.
Peugeot BA 10/5 5 Sp 1987-89 Cherokee w/6 Cyl.
Automatic Transmissions
AISIN/Warner AW4 4 Sp 1987-93 Wagoneer
Chrysler 904 3 Speed 1984-86 Cherokee w/4 & V6
AISIN/Warner AW4 4 Sp 1989-02 Cherokee
A500 4 Speed 1994-99 Grand Cherokee w/4.0L
A518 4 Speed 1991-02 Grand Cherokee w/V8
5-45RFE 2004-05 23Spl. 4.7L ZJ
5-45RFE-A5 2002-05 23Spl. KJ w/ 2.8
45RFE 1999-05 23Spl. 3.7L & V8’s
W5A580 2005 23Spl. 3.7L ZJ
IDENTIFYING THE STOCK
TRANSMISSION:
Over the past 60 years, Jeep vehicles have been equipped with over
25 different transmissions. Listed in this section are the stock 1987
& Newer Jeep transmissions. It is difficult to identify the specific
transmission by the year of the vehicle, so we will detail specific
information that applies to both the identification and application for
Jeep transmission conversions.
(Note: The engine blocks referenced are as follows: Chevy includes all V8s,
229 & 4.3 V6. Ford includes 289, 302, 351W. AMC includes 258, 304, 360,
401, 4.2L, 4.0L - each manufacturer group having the same block bolt pattern.
The newer Chevy Generation III Vortec engines require a few additional
considerations.)
JEEP TRANSMISSIONS 1987 & UP:
The transmissions used in Jeeps 1987 & up changed once again. The indexing of these transmissions to the bellhousing was
no longer done by a bearing retainer. Dowel pin alignment was then introduced. Along with this new
type of indexing, Jeep also changed the design of their clutch mechanism. In Jeeps 1987-93, Jeep
used an internal hydraulic throw-out bearing design (photo on right). This bearing used a plastic
housing that mounted to the front of the transmission. Many Jeep owners experienced leaking
problems with this assembly. Jeep then changed to the external design on 1994 & newer models.
For the transmissions listed in this section, we manufacture a full bellhousing due to the overall length
of the input shaft. When retaining these transmissions, it is crucial to identify the exact transmission
and the type of linkage it is equipped with.
AX4 & AX5 - The overall transmission case length is 22.500”. The output shaft of these
(1985-2002) transmissions are a flush 21 spline in vehicles up to 1996, and then switched to
a 1/2” stickout past the tailhousing in 1997 & newer Jeeps. They are normally
found coupled to an AMC 4 cylinder & some 2.8L V6 engines. The shift handle
is located on top of the adapter housing and mounted with 4 bolts. The
bellhousing indexes to the transmission case using a dowel pin alignment.
The input shaft protrudes 7-1/4” from the front of the transmission case. The
clutch spline is 1"-14, so all conversions will require the use of a special clutch
disc, P/N 716104. The input shaft pilot tip diameter is .590", which is the same
as a stock Chevy transmission.
103
identifying the stock transmission (1987 & newer)