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Moen 4000 cartridge

Single-handle kitchen (40002 = CFG brand).

Checked against the manufacturer

Fits
Single-handle kitchen (40002 = CFG brand)
Used in
Kitchen sink
Handles
Single
How it works
110 degree top-mount or side-mount.
Volume control
Yes
Held in by
Six-sided brass nut
Years
from 2005
Also sold as
40002

How to recognize it

What holds a Moen one-handle faucet cartridge in: U-clip, black hex nut, brass hex nut, black nut with two flats U-shaped clip → 1225 Black, 6 sides → 1255 kit Brass, 6 sides → 150257 kit Black, 2 flat sides → 160657 kit
Take the handle off (water off first) and look at what holds the cartridge. The 1255, 150257 and 160657 are the same cartridge with different nuts, and the nuts don't swap. Simplified drawing, not to scale.

Don't mix it up

Good to know

40002 introduced 2000. Dorsey 87007/CA87007 and Torrance 87666/CA87666 use the 4000.

Before you buy: pull the old part and compare it side by side. Similar-looking parts often don't swap.

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Sources