Quicksilver 143°F Thermostat Kit is a high-quality cooling system component that fits a wide range of Mercury, Mariner, and OMC outboards. Engineered to regulate engine temperature for peak efficiency, this kit is a direct replacement for Evinrude and Johnson OMC part #434841. Maintaining the correct operating temperature is essential for maximizing engine longevity and fuel economy.
- Fits Mercury/Mariner V6 135-200hp outboards
- Replaces Evinrude and Johnson OMC #434841
- Fits 5-55hp 2-cylinder, 85-140hp V4 Cross, and 150-235hp V6 Cross models
- Ensures peak performance and highest efficiency
- 143°F opening temperature
