Yamaha - Thermostat Gasket - 20 25 30 40 C40 C50 P40 V200 V225 VX200 VX225 VX250 225 250 S225 S250 SX225 SX250 - 61A-12414-A0-00

Overview

The Yamaha 61A-12414-A0-00 Thermostat Gasket provides a reliable seal between the thermostat housing and engine components in Yamaha outboard motors. This gasket ensures that coolant flows correctly through the thermostat assembly while preventing water leaks that could reduce cooling system efficiency.

Thermostat gaskets are exposed to constant heat cycles, water pressure, and engine vibration, which can cause them to compress, crack, or deteriorate over time. Replacing the gasket during thermostat maintenance helps maintain proper cooling system performance and prevents leaks within the engine’s cooling passages.

Manufactured to Yamaha OEM specifications, this gasket ensures proper fitment and sealing for a wide range of Yamaha outboard engines used in both recreational and commercial marine applications.

Key Features

• Reliable Cooling System Seal – Prevents leaks between the thermostat housing and engine.

• OEM Yamaha Fitment – Manufactured to factory specifications for proper installation and sealing.

• Heat and Water Resistant Material – Designed to withstand engine heat and constant cooling water exposure.

• Routine Maintenance Component – Ideal for replacement during thermostat servicing or cooling system repairs.

Engine & Boat Compatibility

• 20 / 25 / 30 HP - 1995-1999
• 40 / 50 HP - 1997-2003
• 200 / 225 / 250 HP - 1992-2005
• VX200 / VX225 / VX250 - 2000-2005

Why is this prop a strong choice vs. alternatives?

• Direct OEM Replacement – Designed specifically for Yamaha thermostat housings.

• Maintains Cooling System Efficiency – Ensures proper sealing so coolant flows through the thermostat correctly.

• Prevents Cooling System Leaks – Helps protect engine components from water loss or pressure issues.

• Durable Marine-Grade Material – Built to handle heat, vibration, and constant water exposure.

FAQ

Q: What does a thermostat gasket do?
A: It seals the thermostat housing to prevent cooling water leaks and maintain proper coolant flow.

Q: When should a thermostat gasket be replaced?
A: It is recommended to replace the gasket whenever the thermostat is serviced or removed.

Q: Can a damaged gasket cause overheating?
A: Yes. A leaking gasket may reduce cooling system pressure and affect proper engine temperature control.

Q: Is this an OEM Yamaha part?
A: Yes. This gasket is manufactured to Yamaha factory specifications for fit and reliability.

Q: Why replace the gasket during thermostat service?
A: Replacing the gasket ensures a fresh seal and helps prevent future cooling system leaks.

• Supersessions
  6J8-12414-A0-00, 6H4-12414-A0-00, 6H4-12414-00-00