The parts that normally break in a kitchen faucet are the inner components, in fact some of the components are actually intended to give up, for a better reason. Similar to the brass or bronze bushing on motorized kitchen appliance, they are engineered to fail first to prevent it from destroying the far more expensive shafting. In kitchen faucets, to maintain the main casing, the stem is designed with a much softer alloy such as brass. While we open and close the faucet, the brass stem gradually wears, little by little, until the entire tread finally vanish and can no longer apply pressure to the rubber seal no matter how much you move it. When this happen, a leak appears, and to repair it, the stem is needed to be changed with a new one. Usually you can obtain a replacement faucet stem at a low price, just about lower than $10, much cheaper than if you are going to order the entire faucet.
When purchasing a Price Pfister replacement parts it is recommended to buy an additional set or two if you have many faucet around your place, keep it in a safe place for a quick replacement next time you need it. Replacing your kitchen faucet by on your own will save you a great deal of money on service expenses but if you don’t know what you are doing or if you don’t have any kind of practical knowledge doing them or if you do not have the right plumbing tools, it is better to hire a skilled plumber to prevent further ruining it.