The 974-074 is the 25 mm ceramic cartridge in nearly every Pfister single handle faucet sold since the mid 2000s: the 529 series pull-down kitchens and the 042 series bathroom faucets. When the faucet drips with the handle off, the handle gets stiff, or the handle droops and will not stay up, the cartridge is replaced as a unit. Pfister’s instructions say not to disassemble it. The part is inexpensive, usually around $15, and the job takes 15 minutes.
Before you start. Shut off the two small valves under the sink by turning them clockwise, then open the faucet to confirm the water has stopped. Plug the drain so small parts cannot fall in. You will need a screwdriver, an adjustable wrench or pliers, and for most handles a hex key (an Allen wrench, sold as an inexpensive set at any hardware store). If a shutoff valve will not turn or starts to drip, or anything is corroded and will not loosen with moderate force, stop and see when to call a plumber. New to this? Start here explains the parts and tools in plain language.
Not sure this is your faucet? See how to identify your Pfister cartridge without a model number, or how to find your brand and model.
Parts and tools
- Pfister 974-074 cartridge. 974-074 at Home Depot. Pfister replacement parts lookup
- Hex key for the handle set screw (971-130). Pfister supplies one with the faucet; a standard set covers it.
- Pfister retainer nut tool 931-077 (optional; pliers work)
Shut off both supply stops and open the faucet to drain.
Steps
- Loosen the set screw at the base of the handle with the hex key. It does not need to come out. Lift the handle off.
- Unscrew the cartridge retainer nut (962-075), counterclockwise, with the Pfister tool or pliers wrapped in a cloth.
- Lift the old cartridge straight up and out.
- Wipe out the body and check that the two inlet seals on the bottom of the new cartridge are seated.
- Set the new cartridge in with the tabs on its base indexed in the body. It fits one way.
- Thread the retainer nut on until snug. Do not overtighten; the cartridge is plastic.
- Refit the handle, tighten the set screw, open the stops, and test.
Handle droops after replacement
If the handle will not stay in the open position, the retainer nut is too loose or the handle is not fully seated on the stem. Pfister has a short video on its support site titled “Repair a falling handle” for exactly this.
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