Transfer Case Modification Kit 
Used on the Allison Transmission XTG-411-2A Transfer Case Torque Converter to convert the Torque Converter and therefore the Transfer Case to revision XTG-411-4.
This kit converts NSNs as follows:
- 2520-00-735-4210 to 2520-01-387-5836
 - 2520-00-894-9533 to 2520-01-282-1224
 
This re-designed torque converter should only be used with a XTG411-4 revision Transmission.
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