
Kohler GP1078440
Score: 80/100
Korky 3060BP
Score: 88/100Rankings

The Korky 3060BP is a universal 3-inch toilet flapper designed for high-efficiency toilets, featuring durable red rubber resistant to harsh water conditions. Its main trade-off is the need for manual adjustment of the vent band to match OEM water levels. It is best suited for owners of post-2005 HET toilets with 3-inch flush valves.

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.
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|---|---|---|
2 inches | 3 inchesbest | |
1 countbest | 1 countbest |
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| Attribute | ![]() | ![]() |
|---|---|---|
Material & Durability(4) | ||
Material | Rubber | Red Rubber |
Seal Type | Shark-fin | Adjustable Vent Band |
Hard Water Resistance | null | true |
Water Resistance | null | true |
Design & Features(3) | ||
Chain Material | Not specified | Stainless Steel |
Installation Type | Direct replacement | DIY |
Flapper Type | Shark-fin | Universal Flapper |
Packaging & Support(1) | ||
Warranty Period | null | 5 years |
Compatibility & Fit(6) | ||
Flush Valve Compatibility | Bottom outlet | 3-inch |
Universal Fit | false | true |
Flapper Diameter (inches) | 2 inches | 3 inches |
Toilet Type Compatibility | One-piece | High-Efficiency Toilets (HET) |
GPF Compatibility | null | 1.6/1.28 |
Flush Valve Size | 2 | 3 inches |


Products in the top-left offer the best value (high score, low price).

Professional reviewers and editors do not provide direct quotes or aggregated ratings in the available data. Manufacturer and retailer descriptions emphasize the product as the preferred choice for plumbing professionals, highlighting its adjustable white vent band for matching OEM specifications and its exclusive longest-lasting red rubber material.
There is no available consumer review data, testimonials, or forum discussions to analyze. Consequently, common praise, recurring themes, or specific user complaints cannot be detailed from the provided sources.
