I assume you are looking for part #6 in the diagram below. That is part 3918641. Price is in the mid to upper $40 range. You will also want to replace the seal part #7 which is 3905351. Were you trying to make a new corkscrew? LOL.
Thanks Char I must have done it when I was messing with the timing on the pump I think trying to get it to run right 🙄 I'm just gonna buy a pump out right & sell the other as a core I think 🤔 When it rains it pours it seems 🤬🤬