Ford Focus Mk2 Coolant Cooling Thermostat 2.0 Petrol Engine 4M5G-8575-GA

Ford Focus Mk2 Coolant Cooling Thermostat 2.0 Petrol Engine is a component from the Thermostats and housings group, designed for the cooling system of the 2.0 petrol engine in the second-generation Ford Focus model. It is responsible for maintaining a stable operating temperature of the power unit, which translates into proper engine performance, lower fuel consumption, and reduced risk of overheating.

Specifications and technical data

• SKU: 1566316
• Mark: Ford
• Condition: Used
• OEM Part Number: 1566316
• Substitutable numbers: 1566316, 4M5G-8575-GA, 4M5G8575GA
• Fuel type: Petrol
• Part type: Thermostat Assembly
• Category: Thermostats & Housings

Purpose and function in the cooling system

The presented thermostat is dedicated to the 2.0 petrol engine in the Ford Focus Mk2 and works with the cooling system by regulating the flow of coolant between the engine block and the radiator. Thanks to its precisely selected opening characteristics, it allows for quick achievement of operating temperature after startup and stable maintenance during city and highway driving.

A properly functioning thermostat:

• speeds up engine warm-up after startup,
• stabilizes operating temperature across a wide range of loads,
• reduces the risk of engine overheating,
• supports the proper operation of the lubrication and engine control systems.

Technical specifications and fitment

The component comes from the Ford brand, which ensures structural compatibility with the factory cooling system of the Focus Mk2 with a petrol engine. The thermostat is designed to work with a petrol-powered unit, ensuring its opening and flow parameters are matched to the thermal characteristics of this engine type.

The original design integrated with the housing (as per its classification in the Thermostats and housings category) facilitates installation in place of the factory component, without the need for modifications or adaptations. It is a plug-in solution within the cooling system, allowing for efficient replacement during standard maintenance.

Condition of the component and service application

The offered thermostat is a used part, sourced from disassembly, making it an attractive cost-effective alternative to new components while maintaining factory specifications. This type of element is perfect for:

• routine cooling system repairs,
• resolving engine overheating or underheating issues,
• preventive replacement during major engine service work.

Thanks to the preservation of original geometry and mounting points, installation proceeds according to the service procedure provided for the Ford Focus Mk2, which reduces vehicle downtime and minimizes the risk of leaks.

Benefits of using an original thermostat

Using an original thermostat in the Ford Focus Mk2 2.0 petrol engine allows for maintaining the power unit's operating parameters in accordance with the manufacturer's specifications. This translates into:

• stable operating temperature under various operating conditions,
• more predictable engine and control system behavior,
• reduced risk of damage resulting from overheating or excessively low operating temperatures.

For users considering the choice between refurbishment and installing a used factory component, the guide article Refurbished or used original – which part to choose for repairs? may be helpful, as it discusses the practical differences between these solutions in the context of real-world operation.

Related items from the Ford Thermostats and housings group

If you are planning a comprehensive repair or upgrade of the engine area in your Ford and need other components from the same group, such as additional thermostat housings, connection stubs, or other coolant flow control modules, check the available parts in the Ford Thermostats and housings category.