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The BA 10/5 is a light duty five speed transmission. It is smaller than the AX-15 and it is manufactured by Peugeot in France. The case splits lengthwise along the top and bottom, while the AX-15 splits open around its circumference. The input shaft is 1 1/8" 10 spline and the output shaft is 21 spline.

 

Usage

The BA 10/5 was used in all 4.2L equipped Wranglers from 1987 to mid-1989. It was also used in 4.0L Cherokees (XJ) and Comanches (MJ) over the same years.

 

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

 

Photos

A driver's side shot of a BA 10/5 for comparison. Notice how the BA 10/5 doesn't have the regular ribbing on the driver's side compared to the AX-5. The passenger side of the BA 10/5 does have regular ribbing. The main case of the BA 10/5 is made of two pieces bolted together, where as the AX-5 main case is one solid piece of cast aluminum.

Drivers side. Note "SIMI" and the number 3.28351 cast in the side.

From the front with the bell housing removed.

From the front with the bell housing removed. Note "SIMI" and the number 3.2839 cast in the front.

 

Back view of the BA 10/5

Passenger side view of the BA 10/5

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.

Top view of the BA 10/5

 

 


 

 
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