176ºF 80°C Thermostat for Mercruiser CMD QSD 2.8L 4.2L EI ES Marine Engine Motor

176°F 80°C Thermostat for Mercruiser

This 176°F 80°C thermostat for Mercruiser marine engines regulates coolant temperature to keep your CMD QSD 2.8L or 4.2L diesel running efficiently.

Overview

This 176°F 80°C thermostat for Mercruiser is a marine-grade engine thermostat designed for CMD QSD 2.8L and 4.2L diesel engines. It opens at 80°C to maintain optimal coolant temperature, ensuring reliable operation in harsh marine environments. The thermostat is a direct-fit replacement for Mercruiser models requiring a 176°F thermostat.

Built For Performance

• Opens at 176°F (80°C) for consistent engine temperature
• Constructed from marine-grade materials to resist saltwater corrosion
• Designed to match OEM specifications for Mercruiser CMD QSD engines
• Ensures proper coolant flow for efficient heat exchange
• Includes a sealing ring for leak-free installation

Fits These Machines

• for Mercruiser CMD QSD 2.8L
• for Mercruiser CMD QSD 4.2L
• for Mercruiser CMD QSD 2.8L EI
• for Mercruiser CMD QSD 4.2L ES

On-The-Job Use

• Replacing a worn thermostat during routine cooling system service
• Maintaining proper engine temperature for Mercruiser diesel engines in saltwater or freshwater
• Supporting consistent performance in marine vessels with CMD QSD engines
• Ensuring reliable operation during long trips at sea

Specs At A Glance

Good To Know

Q: What temperature does this thermostat open at? A: It opens at 176°F (80°C) to regulate coolant flow.

Q: Is this thermostat compatible with saltwater engines? A: Yes, it is built with marine-grade materials to withstand saltwater corrosion.

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