OEM Replacement Cartridge for Flushmate 500, 501, 503, 504

OEM Replacement Cartridge for Flushmate 500, 501, 503, 504

REPLACEMENT FLUSH VALVE CARTRIDGE: Designed by Flushmate, this replacement flush valve cartridge kit is specifically tailored for every Flushmate system. Experience regulated GPF for a consistent, high-performance flush built with corrosion-resistant materials for long-lasting durability and reliable performance.

Key Features:

  • Efficient Water Flow Regulation: The Flushmate cartridge controls the pressurized water release for a powerful flush and optimal performance in pressure-assisted toilets.
  • Complete Kit: Each package includes the Flushmate brand valve cartridge, duckbill valve, and lower supply filter screen, providing everything needed for a seamless replacement.
  • Fix Leaks & Restore Performance: Replacing the Flushmate cartridge resolves issues like continuous water flow and leakage, effectively restoring your toilet to peak flushing performance.
  • Quick & Easy Installation: Installation is simple and can be accomplished using basic tools. For added convenience, a Flushmate cartridge wrench (ST100500) or 3-in-1 wrench (ST100100) can be utilized.
  • OEM Quality: This equipment manufacturer (OEM) cartridge is designed for the 500, 501, 501A, 501B, 503, and 504 series Flushmate Tank systems assembled in the USA.
  • Durable & Long-Lasting Performance: Built to endure the demands of pressure-assisted toilet systems and constructed from materials, this Flushmate cartridge ensures reliable performance, minimizing the frequency of replacements.
  • Includes Duckbill Valve & Filter Screen: The cartridge assembly features a duckbill replacement valve for the upper supply, a filter screen, along with detailed installation and maintenance instructions.
  • Flushmate Genuine Parts: Achieve peak performance by using only Flushmate Genuine Parts. Our products adhere to the highest standards, ensuring reliable functionality, especially for commercial restroom applications.
  • One : Enjoy peace of mind with limited one- and dedicated US-based product support, delivering dependable performance and long-term satisfaction.

Why Choose Our OEM Replacement Cartridge?

Rejuvenate your Flushmate system with our OEM Replacement Cartridge, designed specifically for optimal performance and durability. Say goodbye to common toilet issues like leaks and weak flushing, and embrace powerful and efficient functionalities. Trust in Flushmate craftsmanship to ensure quality and reliability in every flush.

    • Free & Fast Shipping - We offer free shipping to most of the USA with a normal delivery time of 3-10 business days. However, due to various situations, additional delivery time (up to 3 weeks) may be required for some items.
    • Alternative Carriers - We may use alternative carriers (e.g. USPS, FedEx, UPS, etc.) to ensure your package arrives safely and on time. Due to the use of multiple carriers, we are unable to provide a tracking number automatically.
    • Handling Time - Orders are processed and shipped within 1-5 business days of receiving cleared payment.
    • Shipping Restrictions - Shipping to Alaska, Hawaii, Puerto Rico, Guam, and other US territories may incur shipping charges or delivery restrictions. Please contact us before ordering, or your order can be refunded/cancelled.
    • State Restrictions - There may be restrictions based on your state of purchase. For example, certain items may not be shipped to California due to state regulations.
    • Contact for Tracking Updates - If you require tracking updates or have any concerns about the delivery of your order, please feel free to contact us, and we will be happy to assist you.

    • 30-Day Hassle-Free Returns - We want you to be completely satisfied with your purchase. If you are not, you can return the item within 30 days of receiving it for a full refund or exchange.
    • Easy Return Process - To start a return, simply contact us and we will provide you with a prepaid return shipping label and detailed instructions.
    • Restocking Fee - There are no restocking fees for returns. However, the buyer is responsible for return shipping costs if the return is not due to a seller's error.
    • Refund Processing Time - Refunds will be processed within 5 business days of receiving the returned item in its condition.

We accept all major credit cards, PayPal, and Apple Pay for your convenience. Your payment information is secure and encrypted to ensure a safe and seamless transaction. Please complete your payment within 3 days of purchase to avoid any delays in shipping.

Your feedback is extremely important to us. We strive to provide the best products and customer service possible. If you are satisfied with your purchase, please take a moment to leave us a positive review. If you have any concerns or issues with your order, please contact us before leaving negative feedback. We are committed to resolving any problems and ensuring your satisfaction.




If you have any questions or concerns, please feel free to out to our customer support team. You can contact us through the eBay messaging system. We are available Monday to Friday, 9:00 am to 5:00 pm EST, and we will do our best to respond to your inquiry within 24 hours.



Buy it now and enjoy a pleasant shopping experience!

Gallons per Flush: 1.0 & 1.6 GPFItem Diameter: 3 inchesItem Diameter (Interior): 2 inchesUnit Quantity: 1
Suitable For: Flush Tank,ToiletItems Included: Flush Valve,Flush Valve Cartridge,Duckbill Valve,Lower Supply Filter ScreenMaterial: PlasticRoom: Bathroom
Features: Easy Installation,Durable PerformanceCompatible Model: For Flushmate 500,For Flushmate 501,For Flushmate 503,For Flushmate 504Type: Flush ValveFlushing Technology: Pressure Assisted
Bowl Shape: StandardNumber in Pack: 1Shape: StandardColor: White
Flush Type: Single FlushStyle: Modern