Ford Mondeo Mk4 Coolant Overflow Pipe Hose Line 2.2 TDCi 6G91-8C012-CF

Ford Mondeo Mk4 Coolant Overflow Pipe Hose Line 2.2 TDCi is a component from the Lines, hoses and pipes group, designed for the cooling system in the 2.2 TDCi diesel version. It is responsible for the safe discharge and supply of fluid between the expansion tank and other system components, supporting stable engine operation during daily use.

Specifications and technical data

• SKU: 6G91-8C012-CF
• Mark: Ford
• Condition: Used
• OEM Part Number: 6G91-8C012-CF
• Substitutable numbers: 6G91-8C012-CF, 6G918C012CF
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

The offered hose is dedicated to the cooling system in the fourth-generation Ford Mondeo with a 2.2 TDCi engine. Its task is to maintain proper coolant circulation between the expansion tank and the rest of the installation, which helps maintain a stable operating temperature for the power unit.

A properly selected hose minimizes the risk of leaks, system aeration, and engine overheating. As a result, the cooling system can operate predictably, which translates into the longevity of the power unit and vehicle comfort.

Technical characteristics and fitment

The hose comes from the Ford brand parts line, which means it retains factory geometry and mounting points. This facilitates installation in the engine bay without the need for modifications or reshaping. The properly selected diameter of the ends allows for a tight connection to the cooling system connectors using standard clamps.

The component has been designed to operate in an environment of high temperatures and variable pressures, typical for diesel engine cooling systems. Thanks to this, the hose can work stably with other components, such as the radiator, thermostat, or coolant pump.

Product condition and service application

The expansion tank hose is offered as a used part, making it a reasonable choice for vehicle maintenance when an optimal cost-to-functionality ratio is a priority. Such components are often replaced preventively during cooling system work, such as replacing the expansion tank, radiator, or coolant.

Replacing the hose is especially recommended when the existing part shows signs of material aging, micro-cracks, dulling, or leaks at the connections. Using a hose with the correct shape and length helps restore proper fluid circulation and reduce the risk of failure during operation.

Benefits of using the hose in Ford Mondeo Mk4 2.2 TDCi

• Factory fitment for the 2.2 TDCi cooling system, with no modifications required.
• Stable fluid routing between the expansion tank and other system components.
• Can be used as part of standard service and repair procedures.
• Support for maintaining the correct engine operating temperature in both urban and extra-urban conditions.

Expanding Ford cooling system service

If you are planning a comprehensive repair or upgrade of the cooling system area in your Ford and need other components from the same group, such as flexible coolant hoses, rigid guide pipes, or auxiliary return hoses, check out the available parts in the Ford lines, hoses and pipes category.

Technical support and service knowledge

When planning work on the cooling system or other installations under the hood, it is worth using reliable sources of technical knowledge. For users interested in the selection of components for modern turbocharged units, the Global Parts guide article may be helpful: BMW B58 code – checklist before buying a turbocharger and intercooler, which shows how to approach verifying compatibility, OEM markings, and the installation process in an organized and informed manner.