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Jeep Transmissions: AX-15

AX-15 front AX-15 side AX-15 back


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General


The AX-15 is a medium duty five speed transmission with an aluminum case. It is manufactured by Aisin in Japan and, although they are not compatible, the same model transmission is used in some Toyota trucks. In 1994 the clutch slave cylinder was moved to the outside of the bellhousing, so these AX-15s have a different input bearing retainer to accommodate the different throwout bearing. The input shaft is also slightly different, so a different pilot bushing is used. All AX-15s have a 1 1/8" 10 spline input shaft and a 23 spine output shaft.

Usage

The AX-15 was first used in Cherokees (XJ) and Comanches (MJ) with the 4.0L engine. In mid 1989, the AX-15 was used in Wranglers (YJ) with the 4.2L engine and it continued to be used with the 4.0L engine. The first year of the Grand Cherokee (ZJ), the AX-15 was rare option only with the 4.0L engine. The AX-15 is still used in TJs and XJs with the 4.0L engine.

Transmission 1st 2nd 3rd 4th 5th Rev
AX-15 3.83 2.33 1.44 1.00 0.79 4.22

Last modified Wednesday, 01-Dec-2010 09:17:11 MST


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Comments:

roytaylor (9/2/2013)
will 5 speed tranmission with 4.0 1992 model cherokee fit in 1991 jeep wrangler with 5 speed 4.0

Doug (6/2/2013)
I have a 1991 jeep wrangler renegade, 4.0L, 5 sp manual (AX-15), 75000 miles.
I started to have a vibration when starting out. I thought it was the locking diff. Then I thought it was my clutch. I took it to a specialist he put in a new clutch, pressure plate, T-bearing, slave cyl. & trans. front seal. I still have the same problem. After talking to another jeep owner he said first gear in the trans. Does that and it will get worse, but you can have heavy duty parts installed and that will take care of my problem. Can you add or confirm this, or tell me what you think?
Thanks Doug


P. Ocasio (9/21/2012)
how can I get the book on the ax 15 trainy

adrian (1/30/2012)
i have just fitted a 2.5 td xj gear box to a wangler with no problems .just had to lower the gearbox mount
time for a road test

Steve Ponticelli (1/4/2012)
I have an 88 YJ that I picked up for my daughter (she is a jeep FREAK), well the Pujunk tranny drops out of gear when you come off the accelerator, I want to put an AX 15 in it, I have found a good one in the same yard I found the jeep in, only its in a 94 Cherokee, what am I going to need to do the swap?

John (12/19/2011)
Hi, I have 1989 jeep cherokee Laredo 4.0l I6 How do I tell what 5 speed manual transmission I have? can you tell by the vin#?

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