Replace if there is a leak at the base of the spout and/or the spout is difficult to swivel.
4050 s4050 ring o-ring
K4050 Spout Retainer, O-rings and Seat
The parts came quickly and the repair was super easy. We are very happy!
The dishmaster is a great faucet in all forms but the internal parts do wear out or get clogged up with hard water scale. The replacement parts are easily installed (make sure you get the wrench with your parts supply order) and they work as expected like the original parts. Make sure to get the silicon grease as well to ensure a seal around the internal parts and prevent water leakage.