SIERRA 143°F Johnson/Evinrude Outboard Thermostat – 18-3543

Description

SIERRA 143°F Johnson/Evinrude Outboard Thermostat – 18-3543

The SIERRA 143°F Johnson/Evinrude Outboard Thermostat – 18-3543 is a marine cooling-system replacement component designed for Johnson/Evinrude outboards. Its 143°F (62°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 Johnson/Evinrude outboards
• Thermostat temperature rating: 143°F (62°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: 18-3543
• Product Type: Thermostat
• Application: Johnson/Evinrude outboards
• Temperature Rating: 143°F (62°C)
• OEM / Aftermarket Interchange: Johnson/Evinrude 378065, 393659, 434841, 437414, 5005440, 508626
• UPC: 808282265533