For Mercury 125, 135, 140, 150 Outboard Thermostat 143 Degree 75692 75692Q2

Outboard Thermostat for Mercury

This 143-degree thermostat for Mercury outboard engines regulates cooling system temperature to prevent overheating and maintain efficient operation. It replaces OEM part numbers 75692 and 75692Q2 for models including 125, 135, 140, and 150 horsepower outboards.

Overview

This thermostat is a direct replacement component for Mercury outboard engines, engineered to open at 143 degrees Fahrenheit for consistent thermal management. It fits 125, 135, 140, and 150 HP models, ensuring the engine reaches and holds optimal operating temperature. The thermostat is constructed from corrosion-resistant materials for long service life in marine environments.

Built For Performance

• Opening temperature rated at 143 degrees Fahrenheit for precise cooling control
• Matches OEM specifications for Mercury outboard engines
• Corrosion-resistant construction withstands saltwater and freshwater exposure
• Direct replacement design for easy installation without modification
• Ensures consistent engine temperature to reduce wear and emissions

Fits These Machines

• for Mercury 125 outboard
• for Mercury 135 outboard
• for Mercury 140 outboard
• for Mercury 150 outboard

On-The-Job Use

• Used in recreational and commercial fishing boats powered by Mercury outboards
• Maintains proper engine temperature during long trolling runs
• Essential for performance boating where consistent cooling is critical
• Common in saltwater environments where corrosion resistance is vital

Specs At A Glance

Good To Know

Q: What does a 143-degree thermostat do? A: It opens at 143°F to allow coolant flow, keeping the engine at its ideal operating temperature for efficient combustion and reduced wear.

Q: Is this a genuine Mercury part? A: This is an aftermarket replacement specifically designed to match Mercury's specifications for the listed outboard models.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.