Kohler GP1078441
Score: 85/100
Hibbent Toilet Flapper
Score: 80/100Rankings
The Kohler GP1078441 is a genuine OEM replacement flapper designed specifically for Kohler two-piece toilets featuring Class Five flushing technology. Its key strength is the precise 3.25-inch rubber seal that effectively prevents phantom flushes and maintains high-efficiency performance. However, it is incompatible with non-Kohler models and may degrade faster in hard water environments.
The Hibbent 2 Pack Toilet Flapper Replacement is a blue rubber flapper designed as a direct replacement for the Gerber 99-788 model, featuring durable material and no-tool installation. It is limited to specific Gerber models, which restricts its universal applicability. It is ideal for DIY repairs in homes with city, hard, or well water, offering a quick, tool-free fix that meets US/Canada plumbing standards.
| Attribute | | |
|---|---|---|
3.25 inchesbest | 3 inches | |
1 count | 2 countbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Design & Features(3) | ||
Chain Material | Standard | Stainless Steel |
Installation Type | Direct Replacement | No-Tool |
Flapper Type | Standard Flapper | Flapper |
Packaging & Support(1) | ||
Pack Quantity (count) | 1 count | 2 count |
Compatibility & Fit(3) | ||
Flapper Diameter (inches) | 3.25 inches | 3.0 inches |
Toilet Type Compatibility | Two-Piece | Gerber 99-788 |
Flush Valve Size | 3.25 inch | 3 inches |
Products in the top-left offer the best value (high score, low price).
Plumbing experts and editors from sites like Ferguson and CPE Supply highly recommend this part as the definitive OEM replacement for Class Five systems. They highlight its precise 3.25-inch seal as critical for preventing phantom flushes and its durable rubber construction for resisting corrosion.
Everyday consumers generally report high satisfaction, with many noting that the flapper perfectly fits their Kohler models and restores the toilet to like-new flushing performance. Common praise includes the ease of installation and the elimination of running toilet noises.
“Perfect fit for my Kohler Cimarron-flush like new!”
“No more running toilet; lasted 2 years in hard water”
“Installed in 2 minutes, chain included.”
Installation tutorials and video demonstrations highlight the straightforward nature of the replacement, praising the quick setup and the reliability achieved through proper seal cleaning.
Product pages imply positive sentiment regarding leak prevention and water savings, with video demos suggesting that users find the chain adjustments user-friendly and the overall installation process positive.
