--- product_id: 205566136 title: "Flushmate BU100505-KIT Upper Supply Kit for Pressure-Assisted Toilet Systems - Compatible with 503, 503H, 504 Series, Fits Flushmate, Kohler, Gerber, Includes Upper Supply Assembly & Hose Clamp" brand: "flushmate" price: "VT6287" currency: VUV in_stock: true reviews_count: 9 category: "Flushmate" url: https://www.desertcart.vu/products/205566136-flushmate-bu100505-kit-upper-supply-kit-for-pressure-assisted-toilet store_origin: VU region: Vanuatu --- # Quick & easy installation Pressure-assisted water flow Complete kit with clamp Flushmate BU100505-KIT Upper Supply Kit for Pressure-Assisted Toilet Systems - Compatible with 503, 503H, 504 Series, Fits Flushmate, Kohler, Gerber, Includes Upper Supply Assembly & Hose Clamp **Brand:** flushmate **Price:** VT6287 **Availability:** ✅ In Stock ## Summary > 🚽 Upgrade your flush game—because every flush deserves peak power! ## Quick Answers - **What is this?** Flushmate BU100505-KIT Upper Supply Kit for Pressure-Assisted Toilet Systems - Compatible with 503, 503H, 504 Series, Fits Flushmate, Kohler, Gerber, Includes Upper Supply Assembly & Hose Clamp by flushmate - **How much does it cost?** VT6287 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/205566136-flushmate-bu100505-kit-upper-supply-kit-for-pressure-assisted-toilet) ## Best For - flushmate enthusiasts ## Why This Product - Trusted flushmate brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Durable high-impact plastic with a 1-year warranty and US-based support for peace of mind. - • **Effortless Compatibility:** Fits Flushmate 503, 503H, 504 & top brands like Kohler and Gerber for seamless upgrades. - • **DIY Friendly Installation:** Simple setup with basic tools—get your system back online without calling a plumber. - • **Peak Performance Restored:** Eliminates air leaks to ensure your pressure-assisted flush system operates at full power. - • **All-in-One Replacement Kit:** Includes upper supply assembly and hose clamp for a hassle-free, complete fix. ## Overview The Flushmate BU100505-KIT is a genuine upper supply replacement kit engineered for pressure-assisted toilet systems. Compatible with multiple Flushmate series and major porcelain brands, it delivers reliable, leak-free water flow to restore optimal flushing performance. Designed for quick installation with included components, this durable kit ensures long-lasting efficiency backed by a one-year warranty and US-based support. ## Description desertcart.com: Flushmate BU100505-KIT Upper Supply Kit for Pressure-Assisted Toilet Systems - Compatible with 503, 503H, 504 Series, Fits Flushmate, Kohler, Gerber, Includes Upper Supply Assembly & Hose Clamp : Tools & Home Improvement Review: 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. Review: Good replacement - Very good. ## Features - UPPER SUPPLY KIT: The Flushmate BU100505-KIT is an essential upper supply kit designed for pressure-assisted toilet systems, delivering water efficiently into the system to maintain optimal flushing performance. - COMPATIBLE WITH MULTIPLE SERIES: This kit is compatible with all Flushmate systems, including 503, 503H, and 504 series, and fits various porcelain brands such as Sloan, Kohler, Gerber, and more, ensuring wide application. - QUICK & EASY INSTALLATION: Installing the upper supply kit is straightforward and requires basic tools like a slotted screwdriver and hose cutter, making it easy to replace and restore your Flushmate system's functionality. - COMPLETE KIT CONTENTS: The BU100505-KIT includes everything needed for installation, such as the upper supply assembly and a hose clamp, providing all necessary components for a seamless replacement. - DURABLE AND RELIABLE PERFORMANCE: The upper supply kit is designed for long-lasting performance, ensuring your Flushmate system continues to operate efficiently by delivering consistent water flow to the pressure-assisted system. - FLUSHMATE GENUINE PARTS: Our products perform at their best when maintained exclusively using Flushmate Genuine Parts. We offer the largest selection of best-in-class parts, manufactured and tested to Flushmate specifications, designed for the most reliable commercial restroom products. Assemblied in the USA. - ONE YEAR WARRANTY: The Flushmate Upper Supply is backed by a limited one-year warranty and US based product support from Flushmate, ensuring peace of mind and dependable performance for reliable use and long-term satisfaction. - INNOVATIVE SOLUTIONS: At Flushmate, we pride ourselves on engineering solutions that meet the evolving needs of commercial and residential settings. Our products are designed to optimize water usage without compromising on performance, making them ideal for a wide range of applications including homes, offices, schools, healthcare facilities, and more. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0057XUDGG | | Best Sellers Rank | #62,778 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #83 in Toilet Replacement Parts | | Brand Name | Flushmate | | Connector Type | Flushmate specific | | Customer Reviews | 4.6 4.6 out of 5 stars (278) | | Exterior Finish | Black | | Included Components | Sloan Flushmate BU-100505-K | | Inlet Connection Type | Flushmate specific | | Item Dimensions | 3 x 2 x 2 inches | | Item Type Name | Sloan Flushmate BU-100505-K Upper Supply Kit for all series | | Manufacturer | Flushmate | | Material Type | High-Impact Plastic | | Model Number | ST100500 | | 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 | 1.0 Count | | Valve Type | Flushmate | ## Product Details - **Brand:** Flushmate - **Exterior Finish:** Black - **Inlet Connection Type:** Flushmate specific - **Item dimensions L x W x H:** 3 x 2 x 2 inches - **Manufacturer:** Flushmate - **Material:** High-Impact Plastic - **Outlet Connection Size:** 1.25 Inches - **Outlet Connection Type:** Flushmate specific - **UPC:** 064871430052 ## Images ![Flushmate BU100505-KIT Upper Supply Kit for Pressure-Assisted Toilet Systems - Compatible with 503, 503H, 504 Series, Fits Flushmate, Kohler, Gerber, Includes Upper Supply Assembly & Hose Clamp - Image 1](https://m.media-amazon.com/images/I/51vGb7oBiCL.jpg) ## Questions & Answers **Q: Is it compatible with 503?** A: Hello I found a description for you in the instructions for this product Flushmate Original Part BU100505-K Upper supply kit for all series | BU100504-K | BU100503-K Upper Supply, For Use with All 2-Piece Toilet Configurations, Includes Upper Supply Assembly, O-Ring, Hose Clamp Restrictions Note: Flushmate system is not sold as a retrofit component for a gravity-fed toilet. Flushmate System Pressurized flush eliminates double flush and clogs and saves water. Fewer moving parts extends service life. 1ATR2 is designed to replace any previous generation of Flushmate series, including 500, 501, 501-A, and 501-B (except American Standard fixtures). 2VRN8 is designed to replace series 500, 501, 501A, and 501B in American Standard tank number 4086. Include tank-to-bowl gasket. Flush cartridge, upper supply, and lower supply are replacement parts for all Flushmate systems. This upper supply may sit higher than the upper supply used on the 200, 500, and 501-A series. However, if the porcelain tank lid is resting on the upper supply, it may need to be shimmed up on the opposite side to level it out. Another option is to get a new Flushmate system. Flushmate vessels and components do not retrofit into gravity type toilets. They are only used with Flushmate-equipped toilets. **Q: Does this replace the brass fitting that came on original Flushmate 504?** A: The fitting I replaced was plastic. However, it didn’t stop the running. There is a small filter in the water inlet that you should remove to increase the pressure. Those flush mate systems also have a recall so you may want to call them before getting too far off into the weeds. **Q: Does this come with the Duckbill Valve?** A: FYI, I called Sloan and they sold me 4 duckbill valves for $3.66 (on sale), but of course I paid $8 for shipping. still, a better value than this. **Q: What happens in tank if the upper valve goes bad?** A: The toilet will run. This can also be caused by clogged inlet screen. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Problem fixed *by J***B on June 27, 2025* 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. ### ⭐⭐⭐⭐⭐ Good replacement *by N***J on August 28, 2025* Very good. ### ⭐⭐⭐⭐⭐ flushmate BU100505-KIT *by S***N on March 16, 2026* Flushmate fit perfact just what I needed!!!THANKS ## Frequently Bought Together - Flushmate BU100505-KIT Upper Supply Kit for Pressure-Assisted Toilet Systems - Compatible with 503, 503H, 504 Series, Fits Flushmate, Kohler, Gerber, Includes Upper Supply Assembly & Hose Clamp - OEM Original Replacement For Sloan C-100500-K Flushmate Cartridge/PowerFlush Toilet Piston Cartridge Parts for Use with 500, 501, 501A, 501B, 503, and 504 Series Flushmate Tank System (1) - Flushmate 9 in x 7 in x 3 in Black Plastic Powder Coated Wrench for Cartridge Removal --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/205566136-flushmate-bu100505-kit-upper-supply-kit-for-pressure-assisted-toilet](https://www.desertcart.vu/products/205566136-flushmate-bu100505-kit-upper-supply-kit-for-pressure-assisted-toilet) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-04*