Engine Coolant Thermostat Assembly w/ Sensor for Mercedes C300 C350 E350 ML350

Engine Coolant Thermostat Assembly with Sensor for Mercedes

This engine coolant thermostat assembly with integrated sensor regulates coolant flow to keep your engine at operating temperature, built for Mercedes C300, C350, E350, and ML350 models.

Overview

This engine coolant thermostat assembly controls the flow of coolant between the engine and radiator so the engine reaches and holds its proper operating temperature. The included sensor feeds temperature data to the vehicle's engine management system. It suits Mercedes owners replacing a thermostat that is stuck open or closed.

Built For Performance

• Complete assembly with thermostat, housing, and temperature sensor
• Wax-pellet element opens and closes at the specified temperature
• Integrated sensor connects to the factory coolant temperature circuit
• Housing molded to match the original mounting points
• Sealed design to prevent coolant leaks at the housing joint

Fits These Machines

• for Mercedes C300
• for Mercedes C350
• for Mercedes E350
• for Mercedes ML350

On-The-Job Use

• Replacing a thermostat stuck open causing slow warm-up
• Replacing a thermostat stuck closed causing overheating
• Cooling system service and coolant flush jobs
• Restoring proper cabin heat and engine temperature

Specs At A Glance

Good To Know

Q: What are the signs of a failing thermostat? A: An engine that takes too long to warm up, overheats, or shows erratic temperature gauge readings often points to a bad thermostat. Replacing the full assembly restores normal coolant regulation.

Q: Is the sensor included with the assembly? A: Yes, this assembly comes with the temperature sensor already fitted into the housing. That saves you from sourcing and installing the sensor separately.

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