Description
Kohler Toilet Flush Valve Seal Kit — Replaces K-GP1059291 / 2475620
Stop a running toilet and save water with this premium flush valve seal replacement kit. Designed to fit Kohler toilets using the GP1059291 or 2475620 flush valve assembly, this seal kit restores a watertight seal between the flush valve and the tank — eliminating the constant trickle that wastes hundreds of gallons per month.
Key Features
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Exact Kohler Replacement: Precision-molded to match K-GP1059291, GP1059291, and 2475620 specifications
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Chlorine-Resistant Material: Long-lasting silicone-based compound resists degradation from chlorine and hard water minerals
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5-Minute DIY Fix: No tools needed — just your hands. Remove the old seal, press in the new one, done
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Universal Kohler Compatibility: Fits most Kohler toilets with canister-style flush valves including Wellworth, Cimarron, Santa Rosa, and Highline models
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Water-Saving Upgrade: A leaking flush valve can waste 200+ gallons per day — this simple seal replacement pays for itself in the first month
Compatibility
| Specification |
Detail |
| Part Numbers |
K-GP1059291, GP1059291, 2475620 (Replacement) |
| Brand |
Kohler (Compatible) |
| Material |
Silicone-Based Elastomer |
| Installation |
Tool-Free — Press-Fit Design |
How to Replace Your Flush Valve Seal
- Turn off the water supply valve behind the toilet
- Flush the toilet to drain the tank
- Remove the canister-style flush valve (twist counterclockwise on most models)
- Peel off the old seal from the bottom of the canister
- Clean the seal groove thoroughly — remove any mineral buildup
- Press the new seal firmly into the groove, ensuring even seating all around
- Reinstall the canister valve, turn water back on, and test flush
Frequently Asked Questions
Q: How do I know if my flush valve seal is bad?
A: The telltale sign is water constantly trickling into the bowl (you'll see ripples or hear it). Add food coloring to the tank — if it appears in the bowl without flushing, the seal is leaking.
Q: Will this fit my specific Kohler toilet model?
A: This seal fits Kohler canister-style flush valves using the GP1059291 assembly. Compatible with Wellworth, Cimarron, Highline, Santa Rosa, and many others. If your flush valve looks like a tall cylinder (not a flapper), it's likely compatible.
Q: How often should I replace this seal?
A: Typically every 3-5 years depending on water quality. Hard water areas with high chlorine levels may require more frequent replacement.
Q: Is this an original Kohler part?
A: This is a high-quality aftermarket replacement manufactured to match or exceed OEM Kohler specifications for fit and durability.
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