Maytag Neptune front loader. Water drips into drum from the water spout when not being used. It's a slow drip and will take several days to create a puddle in the drum. I have not turned off the power or shut the water off, nor conducted any trouble shooting. I suspect it's a rubber seal of some sort but seeking advice.

Thanks. Isolated it as the cold water valve. Unplugged the machine and closed the hot and cold faucets. Drip quit. Turned cold on, and it dripped. Turned it off and turned hot on and no drip. I'll order part number AP6008413, three way cold water valve. Just to confirm, this is not the water inlet valve, correct? And do I replace it from the back or the front of the machine? Thanks again.

Thanks, ThatGuy. Hardest part was just pulling the machine out from the wall (which required pulling the dryer out from the wall). It's not leaking. I've attached a picture of the old one. Two of the nipples have what I think is a rubber check valve; the third one doesn't. I really didn't examine the replacement piece to see if it has two, or three, check valves.