Mini Countryman F60 Clubman F54 Automatic Dual Mass Flywheel B38 B48 8486557

Mini Countryman F60 Clubman F54 Automatic Dual Mass Flywheel B38 B48 is an original component from the Flywheels and gears group, designed for use with B-series petrol engines and automatic transmissions. Engineered by Mini, it ensures proper torsional vibration damping and stable torque transmission within the drivetrain.

Specifications and technical data

• SKU: 8486557
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 8486557
• Substitutable numbers: 8486557, 21208486557, 28008486557
• Gearbox type: Automatic
• Part type: Dual Mass Flywheel
• Category: Flywheels & Flexplates

Purpose and function in the drivetrain

The presented dual mass flywheel is dedicated to Mini Countryman F60 and Clubman F54 models with B38/B48 series engines and an automatic transmission. Its task is to reduce vibrations generated by the power unit, which translates into smoother engine operation, reduced stress on the gearbox, and higher driving comfort. The original design from the Flywheels and gears group guarantees a proper fit to the factory Mini drivetrain, without the need for modifications to accessories or control software.

Benefits of using an original dual mass flywheel

Using a factory dual mass flywheel in a Mini automatic transmission allows for maintaining drivetrain operating parameters in accordance with the manufacturer's specifications. In practice, this means:

• smoother starting and gear shifting,
• reduced vibration and noise transmitted to the body,
• lower loads on automatic transmission components,
• stable cooperation with B38/B48 engines across the full rev range. By maintaining the original damping characteristics, the drivetrain remains predictable, and throttle response remains consistent with factory ECU settings.

Technical characteristics and compatibility

The dual mass flywheel has been designed specifically for use with an automatic transmission, which is crucial for the durability of the entire powertrain. Properly selected spring and damping parameters allow for:

• effective smoothing of torque impulses,
• protection of the torque converter and internal gearbox components,
• maintaining stable idle speed and smooth gear changes. OEM markings and interchangeable numbers assigned to this reference allow for precise verification of compatibility with a specific vehicle configuration, which is particularly important when selecting used parts.

Professional selection and service application

To fully utilize the potential of this component, installation in a specialized service center is recommended to verify compatibility with the specific engine and automatic transmission version. A correctly selected and installed dual mass flywheel:

• limits the risk of secondary gearbox damage,
• allows for maintaining drivetrain refinement close to factory standards,
• is a cost-effective solution compared to repairing a damaged transmission. If you want to deepen your knowledge on the informed selection of aftermarket components and OEM compatibility verification, it is worth using the expert advice available in the article how to professionally select used car parts.

Expanding the scope of service work

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mini and need other components from the same group, such as additional flywheels, mating gears, or related drivetrain elements, check out the available parts in the Mini Flywheels and gears category.