Sierra 18-43175 Thermostat Kit 130°F Marine Outboard

The Sierra 18-43175 is a premium replacement thermostat kit designed for reliable temperature regulation in marine outboard engines. This complete kit ensures optimal engine performance by maintaining the proper operating temperature and preventing overheating.

Key Features:

• Temperature rating of 130°F for precise thermal control
• Complete kit includes thermostat (18-3540) and thermostat cover gasket (18-60920)
• Durable construction built to withstand harsh marine environments
• Helps improve fuel efficiency and overall engine performance
• Direct replacement for OEM parts

OEM Cross References:

• Mercury Marine: 855676002, 8M0119207
• Nissan/Tohatsu: 3R3-01030-0, 3R3010300M, 3NV010300M
• Mallory: 9-43175

This thermostat kit is engineered to meet OEM specifications and is backed by Sierra's reputation for quality aftermarket marine engine parts. Proper thermostat function is essential for maintaining engine efficiency, longevity, and preventing costly repairs due to overheating or improper temperature regulation.