Replacement for Kohler GP1152349 and GP1152350 15mm Cartridge Pair
Hot and cold 15mm quarter-turn ceramic disc cartridges for Kohler two-handle centerset bathroom faucets. Rebuild both sides in one visit.
Replaces these part numbers
| OEM part numbers | Aftermarket equivalents |
|---|---|
| Kohler GP1152349 (hot) Kohler GP1152350 (cold) | n/a |
Will it fit?
Fits
- Both sides of Kohler two-handle centerset bathroom faucets K-45100, K-R1918-4D, R72780-4D, R99910-4D, K-R45780-4D, K-R37024, K-5316 and R99900-4D
Not compatible with
- Cartridges for Kohler GP1092203 and GP1092204 (widespread style)
- Valves for Kohler GP76671, GP76672, GP77005-RP and GP77006-RP
Is this your part?
Take off one handle, unscrew the brass retainer nut and lift the cartridge out. The original parts are stamped GP1152349 (hot) or GP1152350 (cold). Match a cartridge 15mm across the body with a splined brass stem, a white ceramic window in a black body and a blue seal at the base.
When to replace it
One or both handles drip, weep past the handle base, turn stiff or are slow to shut off. Hot and cold cartridges age together, so rebuilding both sides at once saves a second visit.
Specifications
| FourHome part | 4H1335821HC |
|---|---|
| UPC | 850054895646 |
| Pieces | 1 hot cartridge, 1 cold cartridge |
| Body diameter | 15mm |
| Overall length | About 2 in. each |
| Valve | Quarter-turn ceramic disc |
| Construction | Splined brass stem, threaded brass retainer nut, blue base seal |
| Certification | NSF/ANSI/CAN 372 lead free, IAPMO R&T |
What is in the box
- 1 hot cartridge
- 1 cold cartridge
- Brass retainer nut on each cartridge
- Handles and trim not included
How to install it
Time: About 35 minutes for both sides. Tools: Screwdriver, Adjustable wrench.
- Shut both supply stops under the sink and open the faucet to bleed pressure.
- Work one side at a time so the hot and cold cartridges do not get mixed up.
- Remove the handle, unscrew the retainer nut and lift the old cartridge out.
- Drop in the matching new cartridge with the index tab aligned and thread the nut down snug. Do not overtighten.
- Refit the handle, then repeat on the other side.
- Open the stops and test both sides for a full shutoff.
Questions
Why buy the pair?
The hot and cold 15mm cartridges are not interchangeable because the ceramic disc clocking is different. The pair has one of each, and both sides usually wear at the same time.
Which side is hot?
The hot cartridge (replacement for Kohler GP1152349) goes on the left handle and the cold (replacement for Kohler GP1152350) on the right.
Is it lead free?
Yes. Both cartridges are certified by IAPMO R&T to NSF/ANSI/CAN 372, the lead-free standard for faucets that deliver drinking water.
Can I buy just one side?
Yes. FourHome sells the hot and the cold 15mm cartridge separately.
Related parts
Repair guides
FourHome is not affiliated with or endorsed by any faucet manufacturer. Brand names and part numbers are used only to identify compatibility.