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🚽 Upgrade your flush game — don’t let your restroom fall behind!
The Flushmate BU100505-KIT Upper Supply Kit is a genuine, pressure-assisted flush system replacement part compatible with multiple Flushmate series and major porcelain brands. Designed for quick DIY installation, it includes all necessary components to restore optimal flushing performance by eliminating air leaks. Made from durable high-impact plastic and backed by a one-year warranty with US-based support, this kit ensures reliable, long-lasting operation in commercial and residential settings.










| ASIN | B0057XUDGG |
| Best Sellers Rank | #56,258 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #94 in Toilet Replacement Parts |
| Brand | Flushmate |
| Brand Name | Flushmate |
| Connector Type | Flushmate specific |
| Customer Reviews | 4.6 out of 5 stars 296 Reviews |
| Exterior Finish | Black |
| Included Components | Sloan Flushmate BU-100505-K |
| Inlet Connection Type | Flushmate specific |
| Item Dimensions | 3 x 2 x 2 inches |
| Item Highlight | Pressure-assist flush system, Includes Upper Supply Assembly & Hose Clamp, For 501A, 501B, 503 503H, 503UH, 504 93300719 |
| Item Type Name | Sloan Flushmate BU-100505-K Upper Supply Kit for all series |
| Item dimensions L x W x H | 3 x 2 x 2 inches |
| Manufacturer | Flushmate |
| Manufacturer Part Number | BU100505-K |
| Material | High-Impact Plastic |
| Material Type | High-Impact Plastic |
| Model Number | ST100500 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Outlet Connection Size | 1.25 inches |
| Outlet Connection Type | Flushmate specific |
| Size | Small (2"W x 6"L x 1.2"H) |
| Thread Size | 1.25 inches |
| Thread Type | Flushmate specific |
| UPC | 064871430052 |
| Unit Count | 1 Count |
| Valve Type | Flushmate |
J**B
Problem fixed
Worked perfect. No more air leak so flushes at peak power again. Make sure to cut the hose as close to the old barb as possible like directions say because there is not enough hose to mess it up. If you do then you will be taking the whole Flushmate system apart to put another hose on. Not hard to do, but a lot more work.
N**J
Good replacement
Very good.
S**N
flushmate BU100505-KIT
Flushmate fit perfact just what I needed!!!THANKS
W**G
Don't need a plumber if you're handy
Fixed the sloan flush valve pressure tank, ten minutes you will need 1/4 in rachet, and extension, and a screwdriver.
C**K
Its a direct fit
This is a direct fit for sloan pressure vessel. Suggest removing the hose from valve, rather than cutting it. Had to use a little bit of teflon tape on threads because it leaked from threads. Thats why this gets 4 stars. Try without first the teflon tape first to determine if you have a leak
D**O
Saved me money!!
I bought this for my power flush system. This fit perfectly as a replacement part and I was grateful not to have to replace the whole system. Finding the right part makes a difference in my projects. If you have a problem with your system and you end this buy it, it works!
M**R
Worked
Did the repair
D**L
Weeks on first flush after that, it stops patience
When first installed leaks, leave water on stopped leaking
J**S
Now in the toilet…. Satisfied
A leaking valve in the toilet
Trustpilot
1 month ago
2 months ago