Fluidmaster 500 Flapper
Score: 75/100
Kohler GP1078440
Score: 80/100Rankings
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.
The Fluidmaster 500 is a universal 2-inch solid frame flapper designed for older 3.5+ GPF toilets, featuring Microban technology for durability. Its main limitation is the lack of adjustability and limited consumer feedback for long-term reliability. It is best suited for homeowners with standard 2-inch valves on older toilets needing a reliable, no-frills replacement.
| Attribute | Fluidmaster 500 Flapper | |
|---|---|---|
2 inchesbest | 2 inchesbest | |
1 countbest | 1 countbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | Fluidmaster 500 Flapper | |
|---|---|---|
Material & Durability(5) | ||
Material | Vinyl | Rubber |
Seal Type | Solid Frame | Shark-fin |
Chlorine Resistance | Unknown | true |
Hard Water Resistance | Unknown | null |
Water Resistance | Unknown | null |
Design & Features(4) | ||
Chain Material | Metal | Not specified |
Chain Adjustability | false | true |
Installation Type | Standard | Direct replacement |
Flapper Type | Solid Frame | Shark-fin |
Packaging & Support(2) | ||
Warranty Period | 1 year | null |
Certifications | Unknown | null |
Compatibility & Fit(5) | ||
Flush Valve Compatibility | 2 inches | Bottom outlet |
Universal Fit | true | false |
Toilet Type Compatibility | Pre-1994 (3.5+ GPF) | One-piece |
GPF Compatibility | 3.5+ GPF | null |
Flush Valve Size | 2 inches | 2 |
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