For Johnson Evinrude 18-3673 340975 340976 B4B2658A Thermostat Kit New

Thermostat Kit for Johnson Evinrude

This thermostat kit for Johnson Evinrude outboards replaces OEM cross-reference numbers 18-3673, 340975, 340976, and B4B2658A to help maintain proper engine temperature.

Overview

This thermostat kit for Johnson Evinrude outboards is a new replacement component set for the engine cooling system. The thermostat kit helps regulate engine temperature by controlling coolant flow through the powerhead. It is intended for Johnson Evinrude engines that use the listed OEM references.

Built For Performance

• New thermostat kit made as a direct replacement for Johnson Evinrude outboards
• Includes OEM cross-reference numbers 18-3673, 340975, 340976, and B4B2658A
• Helps keep the outboard cooling system at proper operating temperature
• Replaces a failed or worn thermostat to prevent overheating
• Designed for Johnson Evinrude outboard cooling systems

On-The-Job Use

• When replacing a stuck or worn engine thermostat
• During cooling system service on Johnson Evinrude outboards
• As part of an outboard tune-up and maintenance routine
• When restoring proper cooling system function after overheating

Specs At A Glance

Good To Know

Q: What does a thermostat kit do? A: It opens and closes to regulate cooling water flow and maintain proper engine temperature. This helps prevent overheating and promotes consistent outboard performance.

Q: How does this thermostat kit fit? A: Match the OEM cross-reference numbers 18-3673, 340975, 340976, and B4B2658A with the engine parts diagram. This kit is designed for Johnson Evinrude outboards using these references.

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