Quicksilver 833072003 Replacement Thermostat 143°F Mercury OptiMax

The Quicksilver 833072003 is a precision-engineered replacement thermostat designed specifically for 75-115hp Mercury OptiMax outboard engines with serial numbers 1B227000 and above. This OEM thermostat maintains optimal engine operating temperature at 143°F, ensuring your outboard runs at peak performance and efficiency.

Key Features:

• 143°F operating temperature for precise thermal regulation
• Direct OEM replacement for Mercury OptiMax 75-115hp outboards (serial 1B227000+)
• Maintains proper engine cooling temperature for maximum performance and fuel efficiency
• Easy installation with common hand tools
• Manufactured to Mercury Marine's rigorous quality and testing standards

About Quicksilver:

Quicksilver has been the trusted leader in marine engine parts, oils, and accessories for over 65 years. As the premier supplier of Mercury Marine original equipment parts, Quicksilver products undergo extensive testing in the most demanding marine environments. When you choose Quicksilver, you're choosing genuine OEM quality, proven reliability, and complete peace of mind.

Installation Note: Always use the thermostat temperature rating specified in your engine's owner's manual or service manual. Proper thermostat function is critical for engine longevity and performance. Consult your owner's manual for removal and replacement procedures.