KOHLER GP1039444 Flapper for One-Piece Toilets
- One-piece Kohler with Class Five flush
- Cimarron and Memoirs tank models
- Not a universal fit
- Corrosion resistant
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A genuine Kohler flapper for specific one-piece Class Five toilets. Check the tank number inside the tank before buying, since it fits only the listed models.
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ASIN: B001GZZH06Model: GP1039444Category: Toilet Flappers
Overview
A rubber seal that drops over the flush valve after each flush is the working part here, made for one-piece Kohler toilets with Class Five technology. The tank number inside the tank confirms the match.
A genuine part restores the factory seal on the listed tanks. The tank number lookup makes matching easy. Non-listed toilets will not fit.
Who it's for
Owners who can read the tank number inside their tank suit the part. Anyone without a listed model should look elsewhere.
Pros and cons
- Genuine Kohler part
- Tank number makes matching easy
- Limited to listed tanks
- Contents not listed
Performance notes
A matched flapper seats evenly on the valve, stopping slow leaks that refill the tank. Class Five valves need this specific shape. Corrosion resistance slows wear.
Specifications
| Brand | Kohler |
|---|---|
| Model | GP1039444 |
| Toilet type | One-piece, Class Five |
| Size | 3 1/4 in |
| Material features | Corrosion resistant |
| Compatible models | Cimarron 3489, 3802, 11889; Memoirs 3451, 3453 |
Frequently asked questions
What size is the Kohler GP1039444 flapper?
It is for one-piece Kohler toilets with 3 1/4 in flappers.
How do I know if the GP1039444 fits my Kohler?
Find the tank number inside the tank and match it to Cimarron 3489, 3802, 11889 or Memoirs 3451, 3453.
Is it universal?
No. It is made for specific Kohler toilets.
Will it corrode?
It is listed as corrosion resistant.