TOTO Combo Kit – Universal Flapper & Fill Valve Replacement (THU499S)

Overview

The Toto Combo Kit combines a universal flapper with a compatible fill valve in one trusted repair solution. Designed to replace THU499S configurations, this genuine Toto part features adjustable height and flow control to fit a broad range of Toto toilets, delivering a dependable seal and balanced refilling performance.

Why this kit can matter

When a toilet isn’t performing as it should, a thoughtful repair can restore quiet operation and steady cycles. The universal flapper offers broad compatibility and a tight seal, while the adjustable fill valve lets you fine-tune refill timing. Together, they support a smoother, more predictable flush rhythm without needing multiple replacements.

• Universal compatibility for many Toto models that use the THU499S-style flapper
• Genuine Toto part for consistent materials and fit
• Height-adjustable design to dial in a proper seal
• Flow-rate adjustment to tailor refill and flush strength
• Durable construction suited for regular household use

What's included and how it helps

Inside the kit you’ll find the core components and adjustable hardware needed for a straightforward installation. The combination of a universal flapper and a robust fill valve provides a flexible setup for common toilet repairs, helping you restore dependable performance without chasing multiple parts.

• Universal toilet flapper
• TOTO repair part
• Genuine Toto components
• Height-adjustable hardware
• Flow-rate adjustment mechanism

Tips for best results

After installation, run several flush cycles to check for a proper seal and refill. If you notice leaks, lingering sounds, or slow refills, try adjusting the height and flow incrementally and retest until the performance feels balanced.