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Sierra International 18-3569 Marine Thermostat Kit for Mercury/Mariner Outboard Motor

Name: Sierra International 18-3569 Marine Thermostat Kit for Mercury/Mariner Outboard Motor
Brand: Sierra
SKU: 10320742
Price: 200.03 XCD
Availability: InStock
Rating: 4.583333333333333 (12 reviews)

Product ID: 10320742

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Details

Brand
Sierra
Controller Type
Touch
Model Name
Sierra 18-3569
Product Dimensions
5"D x 8.9"W x
Special Feature
Adjustable

🔧Complete gasket & thermostat kit included

⚙️Fits 70-125 HP Mercury/Mariner 2-cycle outboards

🌡️Precise 120°F temperature rating

Description

🌊 Keep your engine cool and your adventures hotter!

ALL IN ONE KIT - Includes thermostat, thermostat gasket, and cover gasket—everything you need for a professional-grade replacement in one package.
LIGHTWEIGHT DURABLE - Crafted from premium metal materials weighing just 0.08 lbs, combining durability with easy handling and installation.
OEM QUALITY ASSURANCE - Meets or exceeds original equipment standards and is fully interchangeable with top brands like GLM, Mallory, and Mercury Marine.
SEAMLESS COMPATIBILITY - Engineered to fit Mercury/Mariner 70-125 HP 2-cycle outboards from 1987 onwards, ensuring hassle-free installation and peak performance.
OPTIMAL TEMPERATURE CONTROL - Maintains a precise 120°F operating temperature to protect your engine and maximize efficiency on every voyage.

The Sierra International 18-3569 Marine Thermostat Kit is a precision-engineered replacement part designed for Mercury/Mariner 70-125 HP 2-cycle outboard motors (1987+). Featuring a 120°F temperature rating and including all necessary gaskets, this lightweight, durable kit ensures reliable engine temperature regulation and seamless compatibility with OEM standards, making it the go-to choice for marine professionals and enthusiasts alike.

Specifications

ASIN	B000N9NXLG
Additional Features	Adjustable
Backlight	No
Best Sellers Rank	#853,303 in Automotive ( See Top 100 in Automotive ) #1,691 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	4.5 4.5 out of 5 stars (155)
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	0.08 Pounds
Manufacturer	Sierra
Manufacturer Warranty Description	Limited warranty.
Material Type	Metal
Model Name	Sierra 18-3569 Thermostat Kit
Model Number	18-3569
Mounting Type	Bracket Mount
Power Source	Battery Powered
Product Style	Classic
Specific Uses For Product	Marine Outboard Motor Control
Temperature Control Type	Thermostatic
UPC	808282112899
Unit Count	1.0 Count

Reviews

K**.

Good part decent price

Fit and worked well

4.12.2025

A**E

Perfect fit

Fit perfect on 1996 mercury 115 2 stroke.

23.01.2026

A**.

Boat

Worked well for what my husband needed it for fits just right

17.12.2024

B**S

Good

Work well

28.11.2024

T**.

This is a perfect OEM Thermostat kit for my 1998 Mercury 115

13.08.2024

G**0

Thermostat

Perfect replacement for my mercury outboard

3.07.2024

A**T

Works perfect

90 hp Mercury

20.08.2021

A**R

Thermostat

Thermostat kit was extremely easy to install and fit my outboard perfectly

27.12.2019

D**O

All the parts fit and came with the correct 120 degree thermostat .

13.09.2021

A**R

Great price

2.03.2018

R**E

fit great and no leaks!!!

19.07.2017

R**S

Wrong size gasket didn't work

24.09.2016

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5 days ago

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1 month ago

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