---
product_id: 90484859
title: "Boat Motor Thermostat 3H6-01030 for Mercury Mercruiser Quicksilver Tohatsu Nissan Outboard M NS 3.5HP - 40HP 50º 50 degrees Engine"
brand: "itaco"
price: "€ 45.35"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.hr/products/90484859-boat-motor-thermostat-3h6-01030-for-mercury-mercruiser-quicksilver-tohatsu
store_origin: HR
region: Croatia
---

# Precision 50°C temp control Fits 3.5-40HP outboards Easy engine mount install Boat Motor Thermostat 3H6-01030 for Mercury Mercruiser Quicksilver Tohatsu Nissan Outboard M NS 3.5HP - 40HP 50º 50 degrees Engine

**Brand:** itaco
**Price:** € 45.35
**Availability:** ✅ In Stock

## Summary

> 🌊 Stay cool, run smooth — the thermostat every serious boater needs!

## Quick Answers

- **What is this?** Boat Motor Thermostat 3H6-01030 for Mercury Mercruiser Quicksilver Tohatsu Nissan Outboard M NS 3.5HP - 40HP 50º 50 degrees Engine by itaco
- **How much does it cost?** € 45.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/90484859-boat-motor-thermostat-3h6-01030-for-mercury-mercruiser-quicksilver-tohatsu)

## Best For

- itaco enthusiasts

## Why This Product

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

## Key Features

- • **Lightweight & Compact:** At just 0.81 ounces and compact dimensions, it integrates effortlessly without adding bulk or weight to your engine.
- • **Wide Compatibility Range:** Seamlessly fits Tohatsu, Nissan, Mercury Mercruiser, and Quicksilver outboards from 3.5HP to 40HP—versatility that keeps you ready for any water adventure.
- • **Optimal Thermal Regulation:** Keeps your engine running cool at a precise 50°C, preventing overheating and boosting performance.
- • **Durable Aftermarket Quality:** Crafted by ITACO, this brand-new thermostat ensures reliable, long-lasting operation under demanding marine conditions.
- • **Simple Manual Operation & Mounting:** Designed for straightforward engine mounting and manual control, so you can upgrade your boat’s cooling system hassle-free.

## Overview

The ITACO Boat Motor Thermostat 3H6-01030 is a precision-engineered aftermarket replacement designed for 3.5HP to 40HP outboard engines including Tohatsu, Nissan, Mercury Mercruiser, and Quicksilver models. Operating at a critical 50°C, it ensures optimal engine temperature control to prevent overheating. Lightweight and compact, it mounts easily on 4-stroke gasoline engines, delivering reliable performance and durability for professional-grade marine use.

## Description



## Features

- Aftermarket Brand: ITACO
- For Tohatsu Nissan Outboard part number 3H6-01030-0, 350-01030-1, 345-01030-1 (Check OEM Part Number before purchase, very IMPT!!!!)
- For Tohatsu Nissan Outboard M NS MFS NSF 3.5HP - 40HP models (2 or 4 stroke)
- BRAND NEW THERMOSTAT (50 degree C)
- Boat Motor Thermostat for Outboard Engine

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | ITACO |
| Color | 3H6-01030 Thermostat |
| Engine Type | 4 Stroke |
| Operation Mode | Manual |
| Mounting Type | Engine Mount |
| Fuel Type | Gasoline |
| Maximum Horsepower | 4E+1 Horsepower |
| Manufacturer | ITACO |
| Item Weight | 0.81 ounces |
| Package Dimensions | 4 x 3 x 1.5 inches |
| Manufacturer Part Number | 3H6-01030-0 M |

## Product Details

- **Brand:** ITACO
- **Color:** 3H6-01030 Thermostat
- **Engine Type:** 4 Stroke
- **Operation Mode:** Manual
- **Mounting Type:** Engine Mount

## Images

![Boat Motor Thermostat 3H6-01030 for Mercury Mercruiser Quicksilver Tohatsu Nissan Outboard M NS 3.5HP - 40HP 50º 50 degrees Engine - Image 1](https://m.media-amazon.com/images/I/61qbdmtw3gL.jpg)
![Boat Motor Thermostat 3H6-01030 for Mercury Mercruiser Quicksilver Tohatsu Nissan Outboard M NS 3.5HP - 40HP 50º 50 degrees Engine - Image 2](https://m.media-amazon.com/images/I/71dgEz0WW2L.jpg)
![Boat Motor Thermostat 3H6-01030 for Mercury Mercruiser Quicksilver Tohatsu Nissan Outboard M NS 3.5HP - 40HP 50º 50 degrees Engine - Image 3](https://m.media-amazon.com/images/I/613IiZ0jaLL.jpg)
![Boat Motor Thermostat 3H6-01030 for Mercury Mercruiser Quicksilver Tohatsu Nissan Outboard M NS 3.5HP - 40HP 50º 50 degrees Engine - Image 4](https://m.media-amazon.com/images/I/612tgJElraL.jpg)
![Boat Motor Thermostat 3H6-01030 for Mercury Mercruiser Quicksilver Tohatsu Nissan Outboard M NS 3.5HP - 40HP 50º 50 degrees Engine - Image 5](https://m.media-amazon.com/images/I/61+m0WiHa2L.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Will this fit 2007 yamaha 90 tlr?**
A: Yes this item will fit your 90 tlr engine

**Q: Will this work 85hp Yamaha 2 stroke**
A: Yes. I used it on my Yamaha 150 2 stroke

**Q: Will it fit a 9.9 ?**
A: I don't know. I was looking for 100HP
You have to get the p/n# then cross reference
The one I got fits 70-100HP

**Q: I’m looking for a thermostat and pressure valve or poppet valve replacement for a yamaha 75hp c75tlru**
A: This thermostat should fit your engine. Can u give us the Yamaha part number of the valves in order to check?

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as it should
*by A***R on July 7, 2025*

Works good

### ⭐⭐⭐⭐⭐ Good unit
*by A***H on April 22, 2025*

Good unit

### ⭐⭐⭐⭐⭐ Work says it should
*by T***R on October 25, 2021*

I've been out in my boat two or three times since I installed it seems to be working well

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-04*