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🌊 Keep your engine cool and your adventures hotter — don’t let overheating slow your ride!
The Sierra International 18-3569 Marine Thermostat Kit is a precision-engineered replacement thermostat designed for Mercury/Mariner 70-125 HP 2-cycle outboard motors (1987 and newer). Featuring a 120°F temperature rating and including all necessary gaskets, this kit ensures reliable temperature regulation and easy installation. Built to OEM standards and interchangeable with leading brands, it offers durable, lightweight metal construction for long-lasting marine performance.



| ASIN | B000N9NXLG |
| Additional Features | Adjustable |
| Best Sellers Rank | #243,816 in Automotive ( See Top 100 in Automotive ) #403 in Automotive Replacement Engine Thermostats |
| Brand Name | Sierra |
| Color | White |
| Connectivity Protocol | Wi-Fi |
| Connectivity Technology | Wi-Fi |
| Control Method | Touch |
| Control Type | Touchpad Control |
| Controller Type | Touch |
| Customer Reviews | 4.6 4.6 out of 5 stars (160) |
| Display Type | touchscreen |
| Global Trade Identification Number | 00808282112899 |
| Included Components | Sierra 18-3569 Thermostat Kit |
| Item Dimensions D x W x H | 5"D x 8.9"W x 5"H |
| Item Type Name | Sierra 18-3569 Thermostat Kit |
| Item Weight | 1.28 ounces |
| Manufacturer | Sierra |
| Manufacturer Part Number | 183569 |
| Manufacturer Warranty Description | Limited warranty. |
| Material Type | Metal |
| Model Name | Sierra 18-3569 Thermostat Kit |
| Model Number | 18-3569 |
| Mounting Type | Bracket Mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Battery Powered |
| Product Style | Classic |
| Specific Uses For Product | Marine Outboard Motor Control |
| Temperature Control Type | Thermostatic |
| UPC | 808282112899 |
| Unit Count | 1 Count |
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