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a glazed or shiny appearance in the pulley grooves
Final Steps: Re-install the carburetor
we recommend replacing the impeller every 100 hours of operation or at least once per year
an impeller puller tool can make removing the old impeller much easier
Thermostat 170°F / 77°C – Fits MerCruiser 4.3L, 5.0L, 5.7L & 6.2L Engines (Replaces Mercury 864493) 2-6 4-Stroke a glazed or shiny appearanceProduct Details This is a direct replacement Thermostat 170F 77C Fits MerCruiser 4. 3L, 5. 0L, 5. 7L & 6. 2L Engines (Replaces 864493). It is designed for a wide range of MerCruiser V6 and V8 MPI sterndrive engines manufactured from 2000 to 2025, ensuring proper engine operating temperature for optimal performance and fuel efficiency. It serves as a direct interchange for multiple part numbers, including Mercury 864493, Sierra 18 43015, Mallory 9
