Replacing a Price Pfister Faucet Cartridge

How to replace a Pfister faucet cartridge, including the part numbers that have been superseded, the B-42 broach, and what to record before you order.

The brand dropped “Price” from its name years ago and nobody in the trade did. On faucets, the difficulty is rarely the removal. It is that Pfister’s part numbering has been superseded more than once, so the number you find may point at something that no longer exists under that designation.

The numbering problem, up front

Two examples that come up constantly:

Avante tub, shower and kitchen. The genuine part is 974-2920, a pull-and-turn cartridge, also listed as 974-292. 974-291 is the earlier designation for what is effectively the same cartridge.

Deep casting valves (0X8, JX8, VB8, JV8). The genuine replacement is 974-0420, which is discontinued and replaced by 974-5299. Older parts lists show it as 974-042. Three numbers, one part.

Aftermarket equivalents exist for both. Where those listings earn their keep is the broach spec: a B-42 broach on a single-lever cartridge tells you more about fit than a brand name does.

Shut off and protect the drain

Turn off the supply stops, open the faucet to relieve pressure, and cover the drain. The retaining clip on these is small and easy to lose.

Getting in

With the handle off, you will find the cartridge held either by a retaining clip or by a bonnet nut over the stem. Establish which before pulling anything. A bonnet nut backs off counter-clockwise; a clip lifts out. Applying pull to a cartridge still held by either is how stems shear.

Record what you have before you pull it

Photograph the cartridge while it is still seated, then note:

• The stem broach. B-42 is common on Pfister single-lever cartridges and is a genuinely useful identifier
• How it is retained, clip or bonnet nut
• Whether it is a pull-and-turn design, as on Avante, or a straight rotate
• The overall length, measured once it is out
• Whether the faucet is single-control or two-handle

Stamped numbers are worth recording but not trusting. They are often mould or cavity marks rather than orderable part numbers, and on a mass-produced cartridge the stamp is frequently the aftermarket maker. Given how many Pfister numbers have been superseded, a number you do find may be describing a part that has since been replaced twice.

Removal and installation

With the retainer fully clear, grip the stem with pliers and pull straight up while gently twisting. The twist breaks the O-ring seal; the pull does the work. Keep it square to the body. If it is seized with scale, a cartridge puller gives you the leverage without damaging the valve body.

Clean and flush the body before the new cartridge goes in.

Lubricate the O-rings with plumber’s silicone grease, never petroleum grease, which swells EPDM and puts you back at the same sink. Seat the new cartridge in the same orientation the old one came out, which is what the photograph was for. Turned around, hot and cold come out reversed.

Retainer or bonnet nut back on before the water goes on, then test: cycle the handle through its full range, check for weep, confirm hot is hot.

Getting the right part the first time

Pfister is the brand where identification bites hardest. The numbering has moved, the same trim sits in front of different castings, and a faucet that has been in service twenty years may already have been repaired with an aftermarket part whose stamp tells you about the aftermarket maker rather than the original.

Pulling the cartridge takes ten minutes. Working out whether you need 974-5299, 974-2920, or something else, and whether the number on the old one still means anything, is what costs the afternoon.

If you would rather not spend that afternoon: photograph the cartridge at the fixture, submit it, and a specialist confirms the exact replacement and posts an itemized written quote. Parts ship direct to the jobsite or your shop. Nothing is charged until you approve the quote.