Thermostat Kit for Mercury Mariner 40-60 HP 110F 3 Cyl 850055A2 59078A2 13141

Thermostat Kit for Mercury Mariner

This thermostat kit controls engine temperature by regulating coolant flow in Mercury Mariner outboard engines from 40 to 60 HP with 3 cylinders, ensuring optimal operating conditions; it serves as a direct replacement for OEM part numbers 850055A2, 59078A2, and 13141.

Overview

This thermostat kit is designed for Mercury Mariner outboard engines ranging from 40 to 60 HP with 3 cylinders. It maintains the correct operating temperature by regulating coolant flow, helping prevent overheating and improving engine efficiency. This kit is ideal for boaters who need a reliable replacement for their Mercury Mariner cooling system.

Built For Performance

• Opens at 110°F for precise temperature control
• Direct replacement for OEM part numbers 850055A2, 59078A2, 13141
• Constructed with corrosion-resistant materials for marine environments
• Ensures consistent coolant flow for reliable engine operation

On-The-Job Use

• Used in Mercury Mariner outboard engines during routine cooling system maintenance
• Ideal for replacement when engine runs hot or overheating occurs
• Commonly installed by marine mechanics during water pump and thermostat service

Specs At A Glance

Good To Know

Q: Will this thermostat kit fit a Mercury Mariner 50 HP engine? A: Yes, it is designed for 40-60 HP 3-cylinder Mercury Mariner outboards, including the 50 HP model. Always verify the engine's specific part number for compatibility before installation.

Q: What is the opening temperature of this thermostat? A: This thermostat opens at 110°F, which is standard for many Mercury Mariner outboard engines to maintain proper operating temperature.

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