Thermostat Fit For Johnson Evinrude 9.9 15 40 48 50 hp 2 str 143° 0436195 777837

Thermostat for Johnson Evinrude

This thermostat for Johnson Evinrude outboard engines regulates engine temperature by controlling coolant flow, designed for 9.9, 15, 40, 48, and 50 hp 2-stroke models with a 143°F rating.

Overview

This replacement thermostat is made for Johnson Evinrude outboards, ensuring your engine reaches and maintains optimal operating temperature for efficient combustion. It fits a range of horsepower ratings and matches OEM specifications for reliable performance in freshwater or saltwater.

Built For Performance

• Opens at 143°F to maintain ideal engine temperature
• Direct replacement for OEM part numbers 0436195 and 777837
• Constructed with corrosion-resistant materials for marine environments
• Precision-engineered sealing surface to prevent coolant bypass
• Compatible with multiple 2-stroke engine sizes from 9.9 to 50 hp

Fits These Machines

• for Johnson Evinrude 9.9 hp 2-stroke
• for Johnson Evinrude 15 hp 2-stroke
• for Johnson Evinrude 40 hp 2-stroke
• for Johnson Evinrude 48 hp 2-stroke
• for Johnson Evinrude 50 hp 2-stroke

On-The-Job Use

• Replaces worn thermostats in outboard cooling systems to prevent overheating
• Used during routine water pump and cooling system service
• Essential for maintaining consistent engine temperature during extended runs

Specs At A Glance

Good To Know

Q: How do I know if my thermostat needs replacing? A: If your engine runs cooler than normal or takes too long to warm up, the thermostat may be stuck open. Sticking closed causes overheating; both indicate replacement is needed.

Q: Is this thermostat compatible with my specific model? A: It fits listed Johnson Evinrude 2-stroke models, but always verify your engine's serial number and existing part number to ensure exact match before ordering.

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