Ford Mondeo Mk4 S-Max Coolant Radiator Cooling Unit 6G91-8005-AC

Visual condition of the part

The product shows signs of use visible in the photos.

Ford Mondeo Mk4 S-Max Coolant Radiator Cooling Unit is an original cooling system component designed for Diesel engines, ensuring stable heat dissipation from the power unit. Thanks to the factory Ford design, the radiator works perfectly with other system components, supporting a safe engine operating temperature and reducing the risk of overheating. It is a practical solution for drivers looking for a proven, used component with maintained functionality.

Specifications and technical data

• SKU: 1778037
• Mark: Ford
• Condition: Used
• OEM Part Number: 1778037
• Substitutable numbers: 6G91-8005-AC, 6G918005AC, 1778037, 6G91-8005-AD, 6G918005AD
• Fuel type: Diesel
• Category: Radiators

Purpose and function in the cooling system

The presented coolant radiator has been designed for Ford Mondeo Mk4 and Ford S-Max models with diesel engines. Its task is to effectively transfer heat from the coolant to the surroundings, which stabilizes the operating temperature of the power unit and supports the durability of key components. A properly selected radiator in a Diesel engine vehicle is of particular importance, as diesel units generate high thermal loads during highway driving and under load.

Benefits of using an original Ford radiator

The original radiator from the Water radiators group ensures a perfect fit for factory mounts, connectors, and hoses, which facilitates installation and reduces the risk of leaks. The design prepared by the vehicle manufacturer guarantees appropriate thermal efficiency, in accordance with the assumptions of Ford engineers. A used component of this type is a reasonable choice for drivers who want to restore the efficiency of the cooling system without the need to invest in a new part, while maintaining factory operating parameters.

Condition, installation, and service application

The radiator is offered as a used component, which means it comes from disassembly and may show signs of use, while maintaining operational functionality. This type of component works perfectly for post-accident repairs, replacement after leaks, or for preventive modernization of the cooling system in heavily used vehicles. Thanks to its factory origin, the installation is similar to plug-and-play, without the need for structural modifications or mount adaptations.

Why it is worth choosing a proven coolant radiator

A stable engine operating temperature translates into lower oil consumption, a reduced risk of engine seizure, and more predictable vehicle behavior in city traffic and on the road. In the case of Diesel engines, this is of particular importance when towing, driving with a full load, or in high ambient temperatures. By choosing an original Ford coolant radiator, you are investing in a component designed specifically for your model, which facilitates diagnostics, service, and subsequent operation.

If you are planning a comprehensive repair or modernization of the engine area in your Ford and need other elements from the same group, such as auxiliary radiators, cooling modules, or additional heat exchangers, check the available parts in the Ford water radiators category.

Technical support and knowledge about the cooling system

When selecting a used radiator, it is worth paying attention to tightness, the condition of the fins, and compatibility with a specific engine version. Additionally, during replacement, it is recommended to check the hoses, clamps, and the quality of the coolant to fully utilize the potential of the installed component. If you want to better understand how high temperatures affect the cooling system and when used radiators and fans are a cost-effective solution, check out the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.