SIERRA 140°F Yamaha F115/VF115 Outboard Thermostat – 18-3639

Description

SIERRA 140°F Yamaha F115/VF115 Outboard Thermostat – 18-3639

The SIERRA 140°F Yamaha F115/VF115 Outboard Thermostat – 18-3639 is a marine cooling-system replacement component designed for Yamaha F115/LF115/VF115 outboards in specified 2014-2023 applications. Its 140°F (60°C) operating rating helps the engine reach and maintain the intended cooling-system temperature. It is a fit-specific service part; confirm the engine model, serial range, cooling configuration, and OEM interchange before installation.

• Designed for Yamaha F115/LF115/VF115 outboards in specified 2014-2023 applications
• Thermostat temperature rating: 140°F (60°C)
• Helps regulate coolant flow as the engine reaches operating temperature
• Direct-fit replacement for the specified marine engine applications
• Suitable for preventive maintenance or replacement of a sticking/corroded thermostat

Specifications

• Manufacturer: Sierra
• Part Number: 18-3639
• Product Type: Thermostat
• Application: Yamaha F115/LF115/VF115 outboards in specified 2014-2023 applications
• Temperature Rating: 140°F (60°C)