I'm glad to hear you didn't have to pay that much. I looked up the part number shown on your plastic bag (LVA803470) on JD Parts and two on-line parts retailers and they all show it as a "spring" for $82.09.
I have it mostly together but needed a few more O rings and copper washers but mostly part number 11 called a bar which is worn on one side. I could probably flip it over but I ordered a new one.
Finally got the tractor back together !!
I can really feel the difference in the
4wd engagement. When t was inserting the new spring I had to compress it with a channel lock to slide it together compared to the stock spring I could squeeze with my fingers.