Ford Focus Mk3 Dual Mass Flywheel 1.5 TDCi Diesel 6 Speed Manual 2521670

Ford Focus Mk3 Dual Mass Flywheel 1.5 TDCi 6 Speed Manual is a component from the Flywheels and gears group, designed for powertrains with a diesel engine and a manual transmission. The dual-mass design helps reduce torsional vibrations, improves engine refinement, and increases the comfort of gear shifting during daily operation.

Specifications and technical data

• SKU: 2521670-1
• Mark: Ford
• Condition: Used
• OEM Part Number: 2521670
• Substitutable numbers: 2521670, FM51-6477-DE, FM516477DE
• Fuel type: Diesel
• Gearbox type: Manual
• Part type: Dual Mass Flywheel
• Category: Flywheels & Flexplates

Purpose and function in the powertrain

The dual-mass flywheel in the version dedicated to the 1.5 TDCi unit paired with a 6-speed manual transmission is responsible for damping vibrations generated by the diesel engine and stabilizing the torque transfer to the gearbox. As a result, jerking during start-up is reduced, cabin noise is decreased, and the operation of the entire powertrain becomes smoother. This component is particularly important in modern diesel engines, where high torque at low RPM requires effective vibration decoupling. A properly selected dual-mass flywheel supports the durability of the clutch, gearbox, and other drivetrain components.

Technical characteristics and compatibility

The presented dual-mass flywheel has been designed to work with a six-speed manual transmission in a diesel-powered drivetrain. The appropriate characteristics of the internal springs and dampers are adapted to the specific operation of a diesel engine, which translates into stable load transfer across the entire RPM range. As an element from the Flywheels and gears group, the product is constructed to work with the factory clutch and starter system, maintaining proper geometry and operating parameters. This makes it possible to maintain the vehicle's factory driving characteristics after replacing a worn component.

Component condition and installation aspects

The offered dual-mass flywheel is a used part, which allows for an economical replacement of the component while maintaining compliance with the vehicle's original specifications. Before installation, standard workshop verification is recommended, including checking for play, working surfaces, and mating clutch components. During installation, it is worth paying attention to:

• thorough cleaning of the contact surface with the crankshaft and clutch disc,
• using the correct bolt tightening torques according to the service documentation,
• checking the condition of the disc, pressure plate, and release bearing to avoid re-intervention in the system in the near future. This approach allows for fully utilizing the potential of the dual-mass flywheel and reducing the risk of improper powertrain operation after replacement.

Benefits of using a dual-mass flywheel

Using the correct dual-mass flywheel in a Ford Focus Mk3 with a diesel engine and manual transmission translates into a number of practical benefits:

• Reduction of vibration and noise – improvement of acoustic comfort inside the vehicle.
• Smoother starting and gear shifting – less jerking and more predictable vehicle behavior.
• Protection of the gearbox – limiting torque shocks positively affects the durability of the transmission.
• Stable diesel engine operation at low RPM – better refinement in city traffic. For users who expect predictable vehicle behavior and want to maintain the factory properties of the powertrain, a properly selected dual-mass flywheel is a key element of the entire drivetrain system.

Powertrain expansion and additional information

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Ford and need other elements from the same group, such as additional flywheels, mating gears, or related torque transmission components, check the available parts in the Ford Flywheels and gears category. For users interested in the broader context of diesel engine operation and the selection of appropriate equipment, it is worth reading the guide article on our blog: Reliability under the star sign – how to take care of engine equipment in popular Mercedes-Benz C-Class and E-Class models?. Although it concerns a different brand, it addresses universal issues related to the durability of power units and the selection of proven spare parts.