I have a Moen faucet that's leaking and have no idea how to fix it.

I've attached a picture of it...hopefully it is posted. I also circled the area at the base of the faucet where it is leaking.

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I found the following parts list on line for the particular model (at least it looks like the same one).


Any guidance on what part(s) I may need and how to fix it would be much appreciated.