Ford Transit Custom Mk8 Coolant Thermostat Housing 2.0 Diesel KK2Q-9K478-BA

Ford Transit Custom Mk8 Coolant Thermostat Housing 2.0 Diesel is a cooling system component designed for diesel engines, ensuring stable operation of the power unit across a wide temperature range. Thanks to its factory origin from the Ford brand, it maintains the correct connection geometry and sealing, which facilitates installation and subsequent operation. This is a practical solution for users who want to restore proper engine performance parameters without compromising on fitment.

Specifications and technical data

• SKU: 2347347-1
• Mark: Ford
• Condition: Used
• OEM Part Number: 2347347
• Substitutable numbers: 2347347, GK2Q-9K478-CA, GK2Q9K478CA, KK2Q-9K478-BA, KK2Q9K478BA, 25069100008
• Fuel type: Diesel
• Part type: Thermostat Housing
• Category: Thermostats & Housings

Purpose and function in the cooling system

The thermostat housing in a diesel engine is responsible for the proper routing of coolant and for working with the thermostat itself, which regulates the circulation of fluid between the engine block and the radiator. For 2.0 Diesel units in the Ford Transit Custom Mk8, a properly functioning housing is crucial for:

• maintaining a stable engine operating temperature,
• reducing the risk of engine overheating or undercooling,
• ensuring proper fluid flow throughout the entire cooling system. Selecting the correct thermostat housing for a specific diesel engine variant helps avoid problems with leaks, improper system venting, or engine control unit errors resulting from incorrect temperatures.

Benefits of using an original Ford housing

The original thermostat housing from the Thermostats and housings group ensures the maintenance of factory flow and sealing parameters, which is particularly important in modern diesel engines. The main advantages of such a solution include:

• precise fit to the sockets and connectors in the 2.0 Diesel engine,
• maintaining the correct position of the thermostat relative to the cooling channels,
• compatibility with factory sensors and coolant hoses. As a result, installation is efficient, without the need for system modifications, and the cooling system reaches stable operating parameters faster after replacement. This translates into more even engine warm-up, better operating culture, and reduced fuel consumption during the warm-up phase.

Characteristics of the used component

The presented thermostat housing is a used component, which allows for economical repair while maintaining the original Ford design. This type of part is a good choice in situations where:

• the existing housing has cracked or deformed,
• there are coolant leaks in the thermostat area,
• a quick replacement with a factory-fit component is necessary. Choosing a used OEM housing is particularly beneficial for maintenance repairs in commercial vehicles, where reasonable service costs are important while maintaining the proper functionality of the cooling system.

Selection by fuel type and catalog numbers

The housing is designed for power units powered by Diesel fuel, which is important when selecting parts within the same engine family. Verifying compatibility by OEM part number and available interchangeable numbers allows for precise matching of the component to the specific configuration of the Ford Transit Custom Mk8. In practice, this means a lower risk of ordering errors and faster installation in the workshop. If you want to learn more about selecting used OEM components by catalog numbers and VIN, an article describing a practical approach to parts selection may be helpful, available here: Audi five-cylinder engine – a legend from Quattro to RS3 and how to take care of it with original Audi parts.

Application in service and cooling system modernization

Replacing the thermostat housing in a Ford Transit Custom Mk8 is recommended not only after a mechanical failure but also preventively during major work within the cooling system, such as replacing the radiator, hoses, or the thermostat itself. This helps reduce the risk of subsequent leaks at connection points and ensures even fluid flow throughout the entire circuit. If you are planning a comprehensive repair or modernization of the engine area in your Ford and need other components from the same group, such as thermostat bodies, connectors, or additional housings, check the available parts in the Ford Thermostats and housings category.