---
product_id: 3907596
title: "TOTO THU343 2-Inch by 4-Inch Outlet Assembly for In-Wall Tank System"
brand: "toto"
price: "¥18096"
currency: JPY
in_stock: true
reviews_count: 8
category: "Toto"
url: https://www.desertcart.jp/products/3907596-toto-thu343-2-inch-by-4-inch-outlet-assembly-in
store_origin: JP
region: Japan
---

# 2x4 inch precision fit OEM-grade replacement part durable in-wall tank compatibility TOTO THU343 2-Inch by 4-Inch Outlet Assembly for In-Wall Tank System

**Brand:** toto
**Price:** ¥18096
**Availability:** ✅ In Stock

## Summary

> 🚿 Upgrade your in-wall tank game with precision and style!

## Quick Answers

- **What is this?** TOTO THU343 2-Inch by 4-Inch Outlet Assembly for In-Wall Tank System by toto
- **How much does it cost?** ¥18096 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/3907596-toto-thu343-2-inch-by-4-inch-outlet-assembly-in)

## Best For

- toto enthusiasts

## Why This Product

- Trusted toto brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **TOTO Trusted Quality:** Built with premium materials that guarantee long-lasting durability and reliable performance.
- • **Sleek, Functional Design:** Combines aesthetic minimalism with robust engineering for a discreet yet powerful plumbing upgrade.
- • **Precision 2x4 Inch Outlet:** Engineered for seamless integration with in-wall tank systems, ensuring a perfect fit every time.
- • **Millennial-Approved Reliability:** Join thousands of professionals who trust TOTO for hassle-free, high-performance plumbing solutions.
- • **Effortless Installation & Repair:** Designed as a direct replacement part to simplify maintenance and reduce downtime.

## Overview

The TOTO THU343 2-Inch by 4-Inch Outlet Assembly is a premium OEM replacement part designed specifically for in-wall tank systems. Engineered for a precise fit and built with durable materials, it ensures reliable performance and longevity. Ideal for professional-grade installation or repair, this outlet assembly blends functional design with trusted TOTO quality, making it a smart choice for modern plumbing upgrades.

## Description

Product Description 2x4 OUTLET ASSEMBLY - IN WALL TANK SYSTEM From the Manufacturer When it comes to Toto, being just the newest and most advanced product has never been nor needed to be the primary focus. Toto's ideas start with the people, and discovering what they need and want to help them in their daily lives. The days of things being pretty just for pretty's sake are over. When it comes to Toto you will get it all. A beautiful design, with high quality parts, inside and out, that will last longer than you ever expected.

Review: Works good as expected! - Works as expected. It’s a second time I’m using this kit and works good!
Review: Be aware - The mounting bracket with this 2x4 conversion kit does not fit. After several calls to Toto and being told just push it harder, finally talked to a “senior” tech who said to use the bracket from the original 2x6 discharge on the 2x4 pipe. This was just one of many installation issues. Nice fancy product but you are going to really piss off your plumber with this one.

## Features

- 2-Inch x 4-Inch size
- For in wall tank system
- Use this part for the installation or repair of your Toto brand
- Model number: THU343

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004K9DDW4 |
| Batteries Required? | No |
| Best Sellers Rank | #544,350 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #836 in Water Pump Accessories |
| Customer Reviews | 4.1 4.1 out of 5 stars (22) |
| Date First Available | September 13, 2010 |
| Finish | No Finish |
| Fit Type | Vehicle Specific Fit |
| Global Trade Identification Number | 00739268188495 |
| Item Package Quantity | 1 |
| Item Weight | 1.3 pounds |
| Item model number | THU343 |
| Manufacturer | TOTO |
| OEM Part Number | THU343 |
| Part Number | THU343 |
| Product Dimensions | 10 x 6.5 x 6 inches |
| Product Grade | Replacement Part |
| UPC | 739268188495 |

## Product Details

- **Brand:** TOTO
- **Exterior Finish:** Stainless Steel
- **Item dimensions L x W x H:** 10 x 6.5 x 6 inches
- **Material:** Stainless Steel
- **Vehicle Service Type:** RV, Camper, Boat

## Images

![TOTO THU343 2-Inch by 4-Inch Outlet Assembly for In-Wall Tank System - Image 1](https://m.media-amazon.com/images/I/41aV+3uEFqL.jpg)
![TOTO THU343 2-Inch by 4-Inch Outlet Assembly for In-Wall Tank System - Image 2](https://m.media-amazon.com/images/I/81E3--ZTLWL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works good as expected!
*by P***V on October 15, 2025*

Works as expected. It’s a second time I’m using this kit and works good!

### ⭐⭐ Be aware
*by C***G on March 26, 2025*

The mounting bracket with this 2x4 conversion kit does not fit. After several calls to Toto and being told just push it harder, finally talked to a “senior” tech who said to use the bracket from the original 2x6 discharge on the 2x4 pipe. This was just one of many installation issues. Nice fancy product but you are going to really piss off your plumber with this one.

### ⭐⭐⭐⭐⭐ Five Stars
*by F***. on December 27, 2016*

It's the part exactly that I want, it fits into two by four studs.

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**Shop now:** [https://www.desertcart.jp/products/3907596-toto-thu343-2-inch-by-4-inch-outlet-assembly-in](https://www.desertcart.jp/products/3907596-toto-thu343-2-inch-by-4-inch-outlet-assembly-in)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-23*