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🔧 Upgrade your throne with silent precision — because your bathroom deserves the best!
The Kohler Silent Fill Toilet Valve Kit (GP1138930) is a genuine OEM replacement part designed for Kohler Class 5 toilets. Featuring silent fill technology, adjustable fill-rate inserts, and a threaded plastic screw rod for easy height adjustment, it ensures quiet, efficient, and customizable tank refilling. Durable and straightforward to install, this kit restores optimal toilet performance while conserving water and reducing noise.










| ASIN | B003MH314U |
| Best Sellers Rank | #5,003 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Toilet Flush Valves |
| Brand | Kohler |
| Brand Name | Kohler |
| Customer Reviews | 4.6 out of 5 stars 5,102 Reviews |
| Exterior Finish | White |
| Global Trade Identification Number | 00650531935076 |
| Included Components | valve, inserts, fill hose, and assembly hardware |
| Inlet Connection Size | 0.88 Inches |
| Inlet Connection Type | Fill |
| Item Dimensions | 13 x 3.5 x 3 inches |
| Item Type Name | KOHLER GENUINE PART |
| Item Weight | 1 Grams |
| Item dimensions L x W x H | 13 x 3.5 x 3 inches |
| Manufacturer | KOHLER |
| Manufacturer Part Number | GP1138930 |
| Material | Metal, Plastic |
| Material Type | Metal, Plastic |
| Model Number | GP1138930 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.88 Inches |
| Outlet Connection Type | Fill |
| Set Name | Silent Fill Toilet Fill Valve Kit (Includes Multiple Fill-Rate Inserts) |
| Size | 12.5" x 3.5" x 3" |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specification Met | oem |
| Thread Size | 0.875 inches |
| Thread Type | NPT |
| UPC | 650531935076 |
| Unit Count | 1.0 Count |
| Valve Type | Float Cup |
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