Ford Mondeo Mk5 Coolant Expansion Tank Overflow Reservoir DG93-8A080-BA

Visual condition of the part

The product shows signs of use visible in the photos. Ford Mondeo Mk5 Coolant Expansion Tank Overflow Reservoir is an original cooling system component, designed for stable engine operation under demanding conditions. As part of the Expansion Tanks group, it ensures coolant level control, expansion compensation, and safe discharge of excess coolant. Using an OEM component is a sensible choice for professional repairs or maintenance of the cooling system in a Ford Mondeo Mk5.

Specifications and technical data

• SKU: DG93-8A080-BA-1
• Mark: Ford
• Condition: Used
• OEM Part Number: DG93-8A080-BA
• Substitutable numbers: DG93-8A080-BA, DG938A080BA, 1863539
• Part type: Coolant Expansion Tank
• Category: Expansion & Overflow Tanks

Purpose and function in the cooling system

This expansion tank acts as a buffer element in the coolant circuit, stabilizing pressure and allowing for the safe discharge of excess fluid into the overflow line. A properly selected tank helps maintain the optimal operating temperature of the power unit, reduces the risk of overheating, and facilitates visual inspection of the fluid level during daily use. Thanks to its factory fit for the Ford Mondeo Mk5, the geometry of the connectors, mounting points, and housing shape are consistent with the original installation, which translates into secure seating in the engine bay and correct routing of cooling hoses.

Benefits of using an original Ford expansion tank

Choosing an original expansion tank is important for both the durability and safety of the cooling system. The OEM component is designed for specific operating pressure parameters, temperatures, and the engine's operating characteristics in the Ford Mondeo Mk5. This allows for maintaining:

• stable pressure in the cooling system across the full load range,
• proper fluid flow between the radiator, engine, and tank,
• compatibility with factory hoses, clamps, and brackets. Using an OEM component is particularly beneficial for post-accident repairs, replacing a cracked tank, or restoring the vehicle to its technical state in accordance with factory specifications, without the need to use aftermarket parts with uncertain parameters.

Benefits of installing a used expansion tank

Using a pre-owned expansion tank in a Ford Mondeo Mk5 is a solution that allows you to balance cost control with maintaining the original cooling system design. This type of part is especially recommended when:

• the existing tank has cracked or deformed due to overheating,
• there are leaks near the connectors or hose connections,
• a quick replacement of the component is necessary without modifying the installation. An original tank from the same model series ensures proper fitment to the brackets and accessories in the engine bay, which shortens installation time and reduces the risk of stress leading to further leaks. It is a practical solution for workshops and users who want to maintain the consistency of the cooling system with the factory design.

Fitment, identification, and parameters

The product belongs to the Expansion Tanks group and is intended for the Ford Mondeo Mk5, which facilitates clear identification when selecting parts. Manufacturer markings and available replacement numbers allow you to verify compatibility with a specific engine version and vehicle year, as well as compare it with the part removed from the car. When selecting an expansion tank, it is worth comparing the shape of the housing, the placement of the connectors, and the mounting method with the currently installed element. This approach minimizes the risk of error and ensures that the newly installed tank will work with the existing hose system and cooling accessories.

Expanding the Ford cooling system

If you are planning a comprehensive repair or upgrade of the engine area in your Ford and need other elements from the same group, such as additional tanks, mounting elements, or related cooling system components, check the available parts in the Ford Expansion Tanks category.

Technical support and service knowledge

When working with cooling, turbocharging, or exhaust gas recirculation systems, it is worth using reliable service knowledge to avoid unnecessary replacement of functional components. Additional information on engine accessory diagnostics, symptoms of failures, and principles of sensible selection of used parts can be found in the article Accessory failure in TSI and TDI engines: how to service a Volkswagen sensibly and not overpay at the workshop?, which organizes many practical issues that are also useful when servicing other brands.