Engineered Marine Products 75-00456-BR 143°F Outboard Thermostat

The Engineered Marine Products 75-00456-BR is a 143°F marine engine thermostat, also called an outboard thermostat or engine cooling thermostat. It is an aftermarket replacement for the thermostat used in the cooling system of Mercury Marine V6 outboard engines.

Key Features:

• 143°F (approx. 62°C) temperature rating to help the engine reach and hold its proper operating temperature
• Aftermarket replacement for Mercury Marine 75692Q2, 75692T, 75692T3, 75692B2, 62981 and 66850
• Cross-references to Sierra 18-3553, GLM 13010 and 13340, and Mallory 9-43019
• Backed by the Engineered Marine Products warranty: two years for consumer use, and 90 days for commercial use

A working thermostat regulates coolant flow, which helps the engine warm up efficiently and avoids overheating or running too cool. Replacing it is a routine part of cooling system maintenance on outboard engines.