Find the cartridge or toilet part you need, and how to replace it
Answer three or four questions about the handle or the tank and you get the part number, how to confirm it once the trim is off, and a step-by-step guide. Covers Moen and Delta single-handle showers, Moen sink faucets, aerators and toilet tank parts.
The identifier needs JavaScript. Every guide is listed here instead:
- Moen 1222: Posi-Temp shower cartridge
- Moen 1225 / 1200: Single-handle cartridge
- Delta RP46074: MultiChoice 13/14 cartridge
- Delta RP19804: Monitor 1300/1400 cartridge
- M24x1 / M22x1: Faucet aerator
- Fluidmaster 400A / 400H: Fill valve
- Fluidmaster 502 / Korky 100BP: 2-inch flapper
- Fluidmaster 5403 / Korky 3060BP: 3-inch flapper
- Kohler GP1059291: Canister seal
- 7301111-0070A: Champion 4 seal kit
Shower and faucet cartridges
Moen and Delta cartridges that look alike often do not interchange. Each guide shows how to tell them apart, the replacement steps, and the limit stop and thermometer check that every shower cartridge swap ends with.
| Part number | Guide | Fits |
|---|---|---|
| Moen 1222 | Posi-Temp shower cartridge | Moen showers whose handle only rotates |
| Moen 1225 / 1200 | Single-handle cartridge | Moentrol and Standard showers, one-handle sinks |
| Delta RP46074 | MultiChoice 13/14 cartridge | Delta showers made after March 2006 |
| Delta RP19804 | Monitor 1300/1400 cartridge | Delta showers made before March 2006 |
| M24x1 / M22x1 | Faucet aerator | Kitchen and bathroom spouts |
Toilet tank parts
A running toilet usually needs one of these parts. Lift the lid to see which kind you have: a hinged flapper (2-inch or 3-inch), a Kohler canister, an American Standard Champion valve, or the fill valve if water spills into the overflow pipe.
| Part number | Guide | Fits |
|---|---|---|
| Fluidmaster 400A / 400H | Fill valve | Most two-piece tanks, 9 to 14 in tall |
| Fluidmaster 502 / Korky 100BP | 2-inch flapper | Drain opening about 2.5 in |
| Fluidmaster 5403 / Korky 3060BP | 3-inch flapper | Drain opening about 3.5 in |
| Kohler GP1059291 | Canister seal | Kohler single-flush canister toilets |
| 7301111-0070A | Champion 4 seal kit | American Standard 4-inch valves |
Common problems
Toilet keeps running
Four checks with the lid off: overflow pipe, refill tube, dye test, water line.
Shower drips after shutoff
Which Moen or Delta cartridge to replace.
Shower too hot, too cold or reversed
Orientation and limit stop fixes, with the 120°F check.
Sink faucet drips
Find the cartridge or stem before you buy a part.
Weak flow at one faucet
Usually the aerator. How to tell when it is not.
Every guide starts with turning off the water
Each procedure begins by closing the stop valve for that fixture and ends with a leak check, plus a thermometer check on showers. Each one also lists the signs that mean you should stop and call a licensed plumber: a stop valve that will not close, corroded supply lines, water at the base of the toilet, or anything inside the wall.
Gas appliances, water heaters, valve bodies, soldering and main shutoff replacement are not covered. What the site covers and why.
Don't see your faucet or toilet?
Send the brand, the model if you can find it, and a photo of the handle or tank.