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Please note: the TOTO THU855 Auto‑Flush Kit is NOT compatible with the round‑front versions of the S7A/S7 Washlets. This is because the shape and button/rod alignment of round-front models differ from those of elongated versions. The THU855 kit is engineered around the elongated S7A's actuator layout, so it cannot be adjusted to work with round seats.
For single-flush (1.28 or 1.6GPF) toilets please see the TOTO THU857 Auto-Flush Kit.
How To Install Toto THU855 Auto Flush Kit for Dual Flush Toilets with S7A Washlet Bidet Seat
TOTO THU855 UPC Code: 739268436589.
TOTO THU855 Auto-Flush Kit for S7 and S7A Washlets for Dual Flush Toilets
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Frequently Asked Questions
• What if my order arrives damaged?
While we take great care in the packaging and handling of orders, we ask that customers inspect all shipments within 48 hours of delivery, and in the rare event that your order arrives damaged, please send us an email with a photo showing the damages (so we can file a claim with the carrier), and let us know whether you prefer a free replacement or a refund.
• What if I need to return something?
We accept returns within 30 days of delivery. Customers are responsible for return shipping unless we sent the wrong item, the product is defective, or it was damaged during transit. All returns are subject to a 15% restocking fee unless we sent the wrong item, the product is defective, or it was damaged during transit. The restocking fee is what we get charged by the manufacturer – it is not to discourage returns. To return an item, email us, and we'll guide you through the process.
• Why do you ask for phone numbers during checkout?
Some shipping carriers, especially those handling freight, require a phone number to coordinate your delivery. We respect your privacy and guarantee that any information you provide will never be shared with third parties, except for shipping purposes.
When paired with the corresponding WASHLET+ toilet and Auto-Flush compatible 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.
This TOTO Auto Flush Kit is an easy to install yourself upgrade for compatible WASHLET+ T40 dual flush toilets. This model is designed to work with dual flush 1.28 GPF and 0.9 GPF WASHLET+ toilets only.
- New auto-flush kit for TOTO Washlet S7A and S7 bidet seats
- This kit includes the white flush buttons for your S7/S7A remote.
- This kit is only compatible with dual-flush TOTO Washlet+ (T40) toilets, such as Aquia IV
- Not compatible with TOTO S550e or S500e Washlets