Clutch Line BMW F20 F21 F30 F31 Gearbox Control Connecting Pipe Hose 6797408

Clutch Line BMW F20 F21 F30 F31 Gearbox Control Connecting Pipe Hose is an original clutch control system component designed for BMW 1 and 3 Series models with automatic transmissions. Engineered as a factory part, it ensures consistency with the vehicle's design and stable operation of the drivetrain. It is a practical solution for users looking for a component tailored to a specific BMW generation without the need for modifications.

Specifications and technical data

• SKU: 6864478
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6864478
• Substitutable numbers: 6864478, 21526864478, 6797408, 21526797408
• Gearbox type: Automatic
• Category: Additional Clutch Parts

Purpose and function of the clutch line

The clutch line in BMW F20, F21, F30, and F31 models is responsible for the precise transmission of operating pressure between the clutch control system components. In vehicles equipped with an automatic transmission, this component works with the dedicated drivetrain architecture, which allows for maintaining proper operating parameters and reducing the risk of leaks or pressure drops.

A properly selected line minimizes flow resistance of the operating medium, supports stable clutch engagement and disengagement, and helps maintain consistent operation of the entire system over a long service life.

Compatibility with BMW models

The offered line has been developed specifically for BMW F-series platforms, such as the F20 and F21 (1 Series) and the F30 and F31 (3 Series). As a result, the correct mounting points, routing geometry, and fitment to factory brackets and covers are maintained. Using a component from the same design family limits the need for installation modifications and facilitates assembly.

Choosing an original solution from the Other clutch parts group allows you to maintain consistency with other drivetrain components, which is particularly important for vehicles that are used intensively or have been modified.

Performance characteristics and installation

The clutch line designed for use with an automatic transmission is engineered to provide adequate resistance to operating pressure, temperature changes, and vibrations transmitted from the body and drivetrain. The design of the line allows for installation in original mounting points, which simplifies service and reduces mechanic labor time.

When replacing, it is recommended to:

• maintain the factory routing of the line in the engine bay,
• check the condition of adjacent clutch system components,
• thoroughly bleed the system after installation to restore proper response to load.

This approach allows you to fully utilize the potential of the original component and reduce the risk of future leaks.

Use in service and tuning projects

The Clutch Line BMW F20 F21 F30 F31 Gearbox Control Connecting Pipe Hose is suitable for both standard maintenance repairs and projects where the drivetrain or automatic transmission accessories are being upgraded. In the case of modified vehicles, it is essential to maintain the appropriate quality of components responsible for torque transmission, which is why selecting the correct line has a direct impact on the reliability of the entire set.

If you are considering using used components in your project or want to avoid common problems when selecting parts for modifications, it is worth checking out the guide on our blog: Buying used car parts – the most common mistakes when choosing parts for tuning. You will find practical tips there on how to consciously plan purchases and verify part compatibility.

Expanding the BMW clutch system

If you are planning a comprehensive repair or upgrade of the clutch system area in your BMW and need other elements from the same group, such as slave cylinders, hydraulic lines, or additional mounting hardware, check out the available parts in the Other BMW clutch parts category.