Ford Fiesta Mk7 Focus Mk3 B-Max Thermostat Housing Coolant Flange 2S6G-9K478-BD

Ford Fiesta Mk7 Focus Mk3 B-Max Thermostat Housing Coolant Flange is a component from the Thermostats and housings group, designed for the cooling system in popular Ford models. It enables stable coolant flow and proper thermostat seating, which translates into safe engine operation. Using an OEM component is a sensible choice when servicing the cooling system if you value factory geometry and fitment.

Specifications and technical data

• SKU: 1707050-1
• Mark: Ford
• Condition: Used
• OEM Part Number: 1707050
• Substitutable numbers: 2S6G-9K478-BD, 2S6G9K478BD, 1707050
• Part type: Thermostat Housing
• Category: Thermostats & Housings

Purpose and function in the cooling system

The thermostat housing with coolant flange is responsible for a tight connection between the thermostat and cooling system hoses, as well as for the correct distribution of fluid flow. In the Fiesta Mk7, Focus Mk3, and B-Max models, this component works with the factory thermostat, maintaining a stable engine operating temperature and reducing the risk of engine overheating or undercooling. By maintaining the original Ford design, the housing ensures proper positioning of sensors and hoses, which facilitates installation and subsequent maintenance. This is particularly important when replacing parts in vehicles used intensively in urban traffic, where the cooling system operates under variable load conditions.

Benefits of using an original thermostat housing

Using an original thermostat housing instead of a worn or damaged part allows you to maintain the factory operating parameters of the cooling system. In practice, this means:

• secure fitment to the cylinder head and cooling hoses,
• stable coolant flow under various engine loads,
• reduced risk of leaks at the flange connections,
• easier installation without the need for system modifications. For the user, this translates into more predictable engine operating temperature and a reduction in potential failures resulting from overheating. A used OEM component is also an attractive cost-effective alternative to new aftermarket replacements with uncertain geometry.

Condition, fitment, and service application

The offered thermostat housing comes from disassembly and is classified as a used original Ford part. Such components are frequently chosen by workshops specializing in Ford service because they allow for maintaining factory design solutions while optimizing repair costs. The element will prove useful both during a typical replacement of a worn housing and during larger service works within the cooling system, such as replacing the thermostat, hoses, or coolant. Precise fitment to a specific family of Ford engines reduces installation time and minimizes the risk of leakage problems after reassembling the system.

Application in workshop practice and operation

In daily operation, a functional thermostat housing with a flange has a direct impact on the durability of the power unit. A properly functioning cooling system:

• maintains a stable operating temperature,
• limits oil and fuel consumption,
• reduces thermal stress on seals and cylinder head components,
• helps avoid costly repairs associated with overheating. For owners of the Ford Fiesta Mk7, Focus Mk3, and B-Max, choosing an original thermostat housing is therefore a practical way to extend engine life and maintain stable vehicle performance in the long term. 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 thermostat housings, flange bodies, or thermostatic modules, check the available parts in the Ford Thermostats and housings category. For drivers interested in optimizing service costs and making informed choices regarding used components, an interesting supplement to your knowledge might be an article comparing popular Volkswagen units – Volkswagen 1.9 TDI vs 1.4 TSI – evolution of VW engines and repair costs, which shows how the proper selection of parts affects the vehicle's operating budget.