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Jeep Transmissions: BA 10/5

ba10/5 front ba10/5 side ba10/5 back


Jeep Trans

45RFE
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Jeep Trans

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General


The BA 10/5 is a light duty five speed transmission. It looks similar to the AX-15, but smaller and it is manufactured by Peugeot in France. The input shaft is 1 1/8" 10 spline and the output shaft can be 21 spline or 23 spline.

ba10/5 drivers side detail Drivers side. Note "SIMI" and the number 3.28351 cast in the side.
ba10/5 front detail From the front with the bell housing removed. Note "SIMI" and the number 3.2839 cast in the front.
ba10/5 passenger side detail The passenger side. Note the cool detail shots David got. The "YJ" in the plug and "SIMI" and 3.2835 cast on the side. The light square area is the build date tag riveted to the side.
ba10/5 top A top view.
ba10/5 top The passenger side.
AX-5 side Here is a driver's side shot of an AX-5 for comparison. The AX-5 has regular ribbing on the drivers side and it uses a one piece cast aluminum case. The BA 10/5 uses a two piece cast aluminum case that is bolted together at the top and bottom.
ba10/5 bell housing Engine side of the bell housing.
ba10/5 bell housing Transmission side of the bell housing.

Usage

The BA 10/5 and the Aisin AX-5 were used in all Wranglers from 1987-mid 1989. It was also used in Cherokees (XJ) and Comanches (MJ) with the 2.8L V6, 2.5L I4, and 4.0L I6 from their introduction until 1989.

Transmission 1st 2nd 3rd 4th 5th Rev
BA 10/5 3.39 2.33 1.44 1.00 0.79 N/A

Contributors

Photos courtesy David Moulton.

Last modified Wednesday, 01-Dec-2010 09:17:06 MST


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Comments:

Arturo (5/13/2012)
How can i unblock the reverse?

kellen (2/13/2012)
will a peugeot BA-10 and a AX-15 work for my 1998 jeep wrangler 6 cylinder 4.2 liter. the transmission i had in my jeep was the peugeot BA-10.will the AX-15 or even the AX-5 work for my jeep.

Billy (4/16/2011)
Nice idendifiction, very helpful

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