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CALL OR TEXT FOR SPECIAL PRICING | 707-297-3991
CALL OR TEXT FOR SPECIAL PRICING | 707-297-3991
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toto auto flush kit thu857 up close

TOTO Auto-Flush Kit THU857 for Washlet S7A/S7 - Single Flush Toilets

by TOTO
SKU THU857
$129.99

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Call us at 707-297-3991

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The New Auto-Flush Kit For Compatible TOTO Toilets

The TOTO Auto Flush Kit is an easy to install upgrade for compatible WASHLET+ T40 toilets.

This model is designed to work with single flush 1.28 and 1.6 GPF WASHLET+ T40 toilets only.

When paired with the corresponding WASHLET+ toilet and Auto-Flush compatible S7A WASHLET, the Auto Flush kit provides a hands-free automatic flush after every use. No need to touch buttons or handles, and never worry about someone forgetting to flush.

THU857 Auto-Flush Kit Compatibility

  • New auto-flush kit for the Washlet S7A and S7 bidet seats.
  • Only compatible with single-flush 1.28 and 1.6 GPF TOTO T40 toilets. 
  • Not compatible with TOTO S550e or S500e Washlets.
  • Not compatible with round S7A models (SW4735#01)  

* Not compatible with TOTO Supreme II CST634CEFGT40

Customer Reviews

Based on 5 reviews
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(4)
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20%
(1)
J
JOEL RODRIGUEZ
Toto Auto Flush

I wrote on March 5, 2025, that the flush button attached to the remote control didn't arrive in the box. To this day, I haven't received a solution. Without the flush button, I can't use the purchased equipment. Mr. Valdez told me they had written to Toto, but I didn't make the purchase from Toto, but from Bidets Premier.

User picture

Thank you for bringing this to our attention. We sincerely apologize for the inconvenience regarding the missing flush button for your TOTO Auto-Flush Kit. As we’ve been in contact with you via email, we want to assure you that we’ve already reached out to TOTO on your behalf and are actively working on a resolution. We appreciate your patience and understanding.

E
Eliezer Torrez
Outstanding Service & Lightning-Fast Shipping – A 5-Star Experience!

I couldn’t be happier with my experience shopping at PremierBidets.com! From start to finish, they exceeded my expectations. The **shipping was incredibly fast**, and I received my order much sooner than anticipated.

What really stood out was their **responsive and friendly customer service**—every question I had was answered promptly and professionally. It’s rare to find a company that truly prioritizes its customers, and Premier Bidets delivers on that promise.

Additionally, their **return process was hassle-free**, making me feel confident about my purchase. Their **competitive pricing** is the cherry on top—great value without compromising on quality!

If you're looking for a seamless shopping experience, look no further. I highly recommend PremierBidets.com and will definitely be a returning customer.

⭐️⭐️⭐️⭐️⭐️

Thank you so much for your kind words and 5-star review for the TOTO AutoFlush Kit! Your recommendation means a lot to us, and we look forward to serving you again in the future. Thank you for choosing Premier Bidets!

G
Greg

Great auto flusher. Doesn’t it look nice

K
Kevin Menniti
Works great!

Installs easy and works as expected.
I have the TOTO S7 with a single flush Drake toilet. The S7 was trying to do a light flush when both seats were lifted. Had to call TOTO support to reset the S7 for single flush and all is well.

The steps provided by support were not in a manual that I could find.

Steps to reset S7 for single flush:
1. Hold Front Wash and + for 10 seconds
2. Press - > + > - (flashes twice, 2 long beeps)
3. Hold Front Wash and + for 10 seconds
4. Press Rear Wash > - > Rear Wash (Flashes twice, 2 long beeps = Complete.)

Thank you for taking the time to share your experience with the Auto-Flush Kit We are glad to hear that it was easy to install and is working as expected. We apologize for any confusion with the S7's flush settings and are grateful that our customer support team was able to assist you in resetting it for single flush. Thank you for your purchase and for your helpful tip on resetting the S7. We appreciate your feedback and hope you continue to enjoy your Premier Bidets purchase.

J
Jeffrey Margolies
Premier Bidets - Excellent Service and Communications

We purchased a TOTO Auto-Flush Kit THU857 for Washlet S7 and S7A - Single Flush Toilets from Premier Bidets. I was looking for a brief explanation on the product and installation. The person who answered the phone was easy to speak with, and provided a detailed explanation of the product being purchased. The service and communication was excellent. I would definitely purchase from them again.

Thank you, Jeffrey! We’re glad you found our service helpful and informative regarding the Auto-Flush Kit. We appreciate your business and look forward to helping you again!

Best Price

We'll Beat Any Price Online

Easy Returns

30 Days From Delivery

Call Us Today!

+1 (707) 297-3991

Free shipping

Anywhere in the Lower 48 on Every Order

toto auto flush kit thu857 up close

TOTO Auto-Flush Kit THU857 for Washlet S7A/S7 - Single Flush Toilets

$129.99