C-100500-K Flush Valve Cartridge Assembly Kit Replacement for Flushmate 500, 501, 503, 504 Series Pressure Assist Tank, Fits M-101526-F3 M-101526-F4 (2PCS)

Stop the Leaks and Restore Your Flushmate System! Is your toilet constantly running, whistling, or losing flushing power? The C-100500-K Flushmate Cartridge Replacement Kit is the ultimate solution designed for homeowners who want a permanent, leak-free fix. We address the #1 cause of customer dissatisfaction: Installation Leaks. Through our research, we found that 90% of returns are due to unlubricated O-rings or improper seating. Therefore, we strongly recommend that you use silicone grease. Silicone Grease: Essential for creating a waterproof barrier on O-rings. Wrench usage suggestions: Get the perfect 1/4 turn needed for security without over-tightening the tank housing. Visual Installation Guide: Clear, English instructions focused on critical "Tank Seat" placement to ensure the unit is perfectly level. Installation Tip for Success: Before installing the new cartridge into the Tank Floor, ensure the mounting seat is completely clean and free of debris. Apply the included silicone grease liberally to all seals. Once inserted, ensure the cartridge is pushed completely down and level before using the wrench for the final secure turn. Package Includes: 2 x C-100500-K Cartridge 2 x Duckbill Valve 2 x Filter Screen

• 【Wide Compatibility】Perfect replacement for C-100500-K flush valve cartridge. Fully compatible with Flushmate tank systems series 500, 501, 501A, 501B, 503, and 504. Fits M-101526-F3 and M-101526-F4 pressure assist toilets.
• 【Professional Repair Solution】Solve common toilet issues such as leaking, phantom flushing, or weak flush performance. This all-in-one kit restores your pressure-assisted toilet to its original factory performance without replacing the entire tank.
• 【Enhanced Durability & Material】Made of high-quality, corrosion-resistant ABS material. Each cartridge undergoes rigorous quality testing to exceed OEM standards. The upgraded seals ensure long-term leak-proof performance and heat resistance.
• 【Complete Maintenance Kit】Everything you need in one pack! The kit includes 2x C-100500 Flush Cartridge Assembly, 2x Duckbill Valve, and 2x Filter Screen. No need to purchase extra parts for your routine toilet maintenance.
• 【Easy DIY Installation】No special tools or professional plumbing skills required. You can easily replace the old cartridge in minutes by following the simple steps. Save time and expensive plumbing repair costs