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Toto Push Button Spare Part (Dual Flush THU337#CP + 9AU278) - Polished Chrome For MS654

Toto Push Button Spare Part (Dual Flush THU337#CP + 9AU278) - Polished Chrome For MS654

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Restore Proper Dual-Flush Performance with the TOTO Push Button Assembly - THU340#CP

Designed designed for select older Aquia one-piece dual-flush toilets in the 654MF series, the Dual-Flush Push Button Assembly (THU340#CP) includes the components needed to replace worn, damaged, sticking, or missing buttons. Finished in polished chrome, this genuine TOTO replacement button assembly restores smooth dual-flush operation while maintaining the original appearance of your toilet.

Product Details

  • Genuine TOTO replacement part
  • Replacement dual-flush push button assembly
  • Polished chrome finish
  • Restores full and partial flush functionality
  • Designed for older Aquia 654MF-series toilets
  • Helps maintain proper water-saving dual-flush performance
  • OEM fit and finish for reliable operation
  • One year limited warranty

THU340#CP FAQ

What TOTO toilet models is this replacement dual-flush button compatible with?

The THU340#CP is a replacement push-button assembly designed for select older Aquia dual-flush toilet models in the 654MF series, including the MS654114MF, MS654204MF, and CST654MF.

If you are unsure whether this replacement part is compatible with your toilet, call the Plumbing Deals team for assistance before ordering.

Why Replace the Push Button Assembly?

Over time, dual-flush buttons can become worn, loose, damaged, or difficult to operate. Replacing the push button assembly can help restore smooth flushing performance and ensure reliable activation of both flush volumes.

How do I identify the correct replacement dual-flush push button for my TOTO toilet?

The easiest way to identify the correct replacement push button is to locate your toilet's model number. For a detailed walkthrough, read our guide on How to Easily Find the Toilet Model Number.

The TOTO THU340#CP is designed specifically for select older Aquia dual-flush toilets in the 654MF series, so using the correct replacement part helps ensure proper fit and operation. 

How do I install the TOTO THU340#CP dual-flush push button in my bathroom?

Because installation steps can vary slightly by toilet model and button condition, always follow the manufacturer's instructions provided with the part. Installation generally involves removing the existing push button assembly from the toilet tank lid and replacing it with the new assembly according to the included TOTO instructions.