Kohler GP1078440
Score: 80/100
Fluidmaster 5403 Flapper
Score: 92/100Rankings
The Fluidmaster 5403 is a universal adjustable 3-inch toilet flapper designed for high-efficiency toilets, featuring a durable silicone seal and customizable flush volume settings. It offers a solid frame to prevent twisting and includes an adjustable dial to optimize water usage between 1.28 and 1.6 gallons per flush. It is ideal for quick DIY fixes for ghost flushing, water conservation in homes with hard water or chlorine, and universal replacement in brands like Kohler, Toto, or American Standard.
The Kohler GP1078440 is a genuine 2-inch shark-fin style toilet flapper designed as a replacement part for select Kohler one-piece toilets. It features a corrosion-resistant rubber construction with a red finish and includes an adjustable chain for secure sealing and efficient flushing. This part is specifically engineered for bottom outlet flush valves to ensure a reliable fit.
| Attribute | | |
|---|---|---|
2 inches | 3 inchesbest | |
1 countbest | 1 countbest |
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| Attribute | | |
|---|---|---|
Material & Durability(4) | ||
Material | Rubber | Silicone |
Seal Type | Shark-fin | Silicone |
Hard Water Resistance | null | true |
Water Resistance | null | true |
Design & Features(3) | ||
Chain Material | Not specified | Kink-free |
Installation Type | Direct replacement | DIY |
Flapper Type | Shark-fin | Adjustable Flapper |
Packaging & Support(2) | ||
Warranty Period | null | 10 Years |
Certifications | null | |
Compatibility & Fit(6) | ||
Flush Valve Compatibility | Bottom outlet | Universal |
Universal Fit | false | true |
Flapper Diameter (inches) | 2 inches | 3 inches |
Toilet Type Compatibility | One-piece | High-efficiency |
GPF Compatibility | null | 1.28-1.6 |
Flush Valve Size | 2 | 3 |
Products in the top-left offer the best value (high score, low price).
Professional reviewers, including Home Improvement expert Bob Vila, highly recommend the Fluidmaster 5403 as the best overall 3-inch flapper for fixing running toilets. Experts praise its universal fit, adjustability, and durable silicone construction, noting that it provides quality you can trust for eliminating leaks in newer high-efficiency toilets.
Everyday consumers generally praise the Fluidmaster 5403 for its ease of installation, water savings, and longevity. Users frequently report that it stops running toilets quickly and fits a wide variety of brands. While some users mention a learning curve for adjustments, the overall sentiment is positive, highlighting its reliability and durability compared to standard flappers.
