Ford Focus Mk3 Coolant Thermostat Water Outlet Flange 2.0 Petrol CJ5E-8K556-AB

Ford Focus Mk3 Coolant Thermostat Water Outlet Flange is an original component from the Thermostats and housings category, designed for the cooling system in petrol versions of the third-generation Ford Focus. This used OEM part ensures factory-fit, stable thermostat mounting, and proper coolant flow in the petrol engine.

Specifications and technical data

• SKU: 5198498
• Mark: Ford
• Condition: Used
• OEM Part Number: 5198498
• Substitutable numbers: 5198498, CJ5E-8K556-AB, CJ5E8K556AB
• Fuel type: Petrol
• Part type: Thermostat Housing
• Category: Thermostats & Housings

Purpose and function in the cooling system

The thermostat flange in the Ford Focus Mk3 is responsible for the precise seating of the thermostat and a leak-proof connection between the cooling system hoses and the engine block. In petrol-powered units, the proper operation of this component has a direct impact on maintaining a stable operating temperature, which translates into engine performance, fuel consumption, and component durability. The original design of the flange ensures:

• stable coolant flow in the thermostat area,
• compatibility with factory sensors and hoses,
• proper connection geometry, eliminating stress on the hoses.

Advantages of using an original thermostat flange

Using an original Ford thermostat flange instead of a worn or leaking component allows for the restoration of factory cooling system performance. Compared to generic replacements, the OEM part offers:

• secure fitment to the cylinder head and thermostat housing without modifications,
• compatibility with the factory mounting and sealing system,
• consistency with service documentation and manufacturer procedures. Thanks to this, installation is efficient, and the risk of leaks or improper hose alignment is minimized.

Condition, origin, and practical application

The thermostat flange comes from vehicle dismantling and is offered as a used original Ford part. It is a great solution for users who want to maintain the cooling system in an OEM configuration while keeping repair costs reasonable. The component is designed for petrol engines, which is important when selecting parts for a specific engine version. Replacing the flange is particularly recommended in situations where coolant leaks appear around the thermostat, there are issues with system bleeding, or there is visible mechanical damage to the housing. A correctly selected flange helps stabilize the engine operating temperature and reduces the risk of overheating.

Support with selection and additional information

When selecting a thermostat flange for the Ford Focus Mk3, it is crucial to pay attention to compatibility with the petrol engine version and ensure it belongs to the Thermostats and housings category. In case of doubt, it is worth comparing the shape and arrangement of the ports with the currently installed component to avoid installation issues. If you are planning a comprehensive repair or upgrade of your Ford's engine area and need other components from the same group, such as thermostat housings, thermostat inserts, or connection ports, check the available parts in the Ford Thermostats and housings category. If you are considering whether a used OEM part or a replacement is a better choice, you can find practical tips and specific examples in the article 5 reasons why a used OEM part is a better choice than a replacement.