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PPE Allison 5 To 6 Speed Conversion Kit, Chevy/GMC (2001-2005) 6.6L Duramax

For those of you with a 5 speed Duramax looking for the extra gear you are missing, take a look at our 5 to 6 speed conversion kit. This kit is also a good addition if you are taking out your stock transmission out for a rebuild. Adding the extra sixth gear will result in approximately a 350rpm drop at highway speeds, better fuel economy, and less wear and tear on your engine and drive train.
Was: $2,299.99
Sale: $2,069.99
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Converts 5 speed to a 6 speed transmission
Kit includes custom TCM and valve body


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  • 20.0 lbs.
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