The Nissan part# should be 13024-11200. Komatsu and TCM would use the same part # with a N in front of it. It should cost in the low $200 range.
You can probably get a used one at Atlanta Lift Truck or or Absolute Lift Parts, both are in GA. You will probably need the serial # of the truck and the engine. The engine serial # is usually behind the distributor cap.
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