

🚽 Upgrade your flush game with KOHLER’s precision valve kit — because every detail counts!
The KOHLER Valve Service Kit is a genuine, precision-engineered float valve repair kit designed for toilets with 3.5+ gallons per flush. Crafted from premium materials, it ensures enhanced durability and long-lasting performance, making it the trusted choice for maintaining KOHLER toilets with easy installation and reliable fit.
| Brand | KOHLER |
| Item dimensions L x W x H | 4 x 2.85 x 0.8 inches |
| Inlet Connection Size | 1.5 Inches |
| Inlet Connection Type | Compression |
| Outlet Connection Type | NPT |
| Number of Ports | 2 |
| Outlet Connection Size | 2.85 Inches |
| Specification Met | not_applicable |
| Valve Type | Float Valve |
| Global Trade Identification Number | 00650531629753 |
| Manufacturer | Kohler |
| UPC | 650531629753 |
| Part Number | GP30166 |
| Item Weight | 0.2 ounces |
| Product Dimensions | 4 x 2.85 x 0.8 inches |
| Item model number | K-GP30166 |
| Is Discontinued By Manufacturer | No |
| Color | Unfinished |
| Finish | No Finish |
| Item Package Quantity | 1 |
| Number of Handles | 1 |
| Included Components | VALVE SERVICE KIT |
| Batteries Included? | No |
| Batteries Required? | No |
R**C
Perfect for old Kohler Toilets & interchangeable with GP30100
I have two old Kohler Toilets, both of which had slow leaks on the filler side causing waste of running water. I was lucky enough to flip the lid on one and it had a label that suggested Kohler repair part GP 30100. I bought one and though different than the design which was in my toilet (GP30166), it fit and worked in one toilet but leaked in the other, but not sure why. So I installed GP30100 repair kit in the toilet that liked it. I then order GP30166 for the second toilet. The kit arrived from Amazon.com, I installed it. It works beautifully.The four parts are all needed and exact fits for their old counterparts.Great kit, great price, fixed the slow leak, and found it conveniently on Amazon!Hope this helps anyone wondering.Rob
D**O
Worked like a charm.
A few dollars saved a big plumber bill. Perfect fit - stopped the leaking immediately.
C**S
Kit worked fine
The parts fit fine. Valve wasn't turning off all the way, this fixed the issue. Would be better with assembly instructions, but easy enough to figure out.
T**.
Took forever to get. Expected though.
Replacement parts for my 1980s kohler toilets. New OEMEasy installation.
J**E
Should have known, when I had to pay shipping!
Product was in an old package and did not look new! And did not get all the pieces shown in the picture! I was a rip off!
T**R
Exact replacement, works perfectly.
This fit exactly and cured the moaning noises that the valve was making. Simple and economical.
G**E
OEM parts for backup
I purchased this repair kit to have on hand as the replacement valve I installed about a year ago started to leak. I reversed the rubber valve and the leak stopped. OEM parts that appear to be well made and will fit exactly, when I need them. Since my water costs have been increased by 25% for the second time in four years, I can't afford to have a leaky toilet.
B**Y
Was an Exact fit
Beyond the title, there is not much you can say about a repair part. The part fit and worked
Trustpilot
4 days ago
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