Description
Product Overview
The Sierra 18-3608 thermostat kit is engineered for precise temperature management in Yamaha outboard engines. This white, machined exterior unit features a manual temperature control type with a 122°F (50°C) rating, ensuring optimal engine performance. It includes an LCD touch display, operates on 24 volts battery power, and is designed for straightforward wall mounting. With dimensions of 0.39 x 0.39 x 0.39 inches and a weight of 0.353 ounces, it’s compact yet robust, backed by Sierra’s industry-leading warranty for reliability.

Usage
This thermostat kit is ideal for marine enthusiasts and professionals maintaining Yamaha outboard engines in various environments, from recreational boating to commercial fishing. It’s used to monitor and adjust engine temperature manually, preventing overheating and enhancing fuel efficiency. Suitable for installation on boats where consistent engine performance is critical, it serves as a replacement part for routine maintenance or upgrades.
Why Choose Us
Sierra stands out with its commitment to quality and customer satisfaction, offering a warranty that covers this thermostat kit. The product is built with durable materials and precise engineering, ensuring long-lasting performance in harsh marine conditions. Its adjustable features and compatibility with Yamaha engines make it a trusted choice over generic alternatives, providing peace of mind through reliable temperature control.
Key Features
- Manual temperature control with a 122°F rating for accurate engine regulation
- Touch LCD display for easy monitoring and adjustments in real-time
- Compact, wall-mount design that saves space and simplifies installation
- Battery-powered operation with 24V support for reliable use in marine settings
- Compatible specifically with Yamaha outboard engines, ensuring a perfect fit
FAQ
What engines is this thermostat kit compatible with?
It is designed for Yamaha outboard engines; use the SONAR parts finder at fit-guideseastarsolutionscom to verify fit for your specific model.
How do I install the thermostat?
Installation involves wall mounting with the provided components; refer to the product manual for step-by-step instructions to ensure proper setup.
What is the temperature range it controls?
This kit has a fixed temperature rating of 122°F (50°C), ideal for maintaining optimal engine operating conditions.
Is a backlight included for night use?
No, the LCD display does not feature a backlight, so it’s best used in well-lit areas for clear visibility.
Does it come with a warranty?
Yes, all Sierra parts, including this thermostat kit, are covered under Sierra’s customer satisfaction warranty for added assurance.




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