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🔧 Upgrade to silent efficiency — 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 and multiple adjustable fill-rate inserts, it ensures a quiet, efficient refill while conserving water. Made from durable metal and plastic, this kit includes all necessary components for easy installation and maintains your product warranty.









| ASIN | B003MH314U |
| Best Sellers Rank | #5,606 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #7 in Toilet Flush Valves |
| Brand Name | Kohler |
| Customer Reviews | 4.6 4.6 out of 5 stars (5,093) |
| 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 |
| Manufacturer | KOHLER |
| Manufacturer Part Number | GP1138930 |
| 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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