Hello. I have a single-handle Moen kitchen faucet with the sprayer in the faucet (I'm not sure of the model). We seem to have developed a leak beneath the base plate - when we turn the water on and off a number of times, water pools out from beneath the base plate. Interestingly (and happily), I don't find water in the cabinet beneath the sink/faucet, so the problem seems to be (at least at this point) fairly limited and localized. An O-ring? Something else?
Your help is greatly appreciated.

Fred Phillips

I have same problem (leaking Moen kitchen faucet, single handle). So far my research seems to indicate the O-ring. If made since 1996 it has lifetime warranty. Moen website has parts diagrams of all their models. If you have model number, great! If not find one that looks most like yours (many of inside parts are same). Diagram will show kits that contain various parts. Find the one with the O-ring. Call Moen to confirm and they will probably send it to you for free. Good luck.

Open the link below and see if your faucet looks like this it will show all the parts, Moen has a life time Warranty for parts failure not for the whole faucet, good luck.

John


http://www.plumbingpartsdepot.com/moenpulloutkitch.pdf