Luk DMF084 Clutch Flywheel

LuK DMF084 Dual Mass Flywheel

The LuK DMF084 is a dual mass flywheel engineered for precise drivetrain control in select BMW applications. It is built around OE-style tuning to help reduce the stress that can occur when a solid flywheel is used in place of the original dual mass design.

Compatible with 2006 BMW 550i and 2006 BMW 650i applications built to 05/31/2006 with non-sequential transmission, this flywheel is sized for the original drivetrain layout and tooth count. The LuK DMF084 is a direct-fit clutch flywheel solution for BMW 550i and BMW 650i owners who need the correct replacement part number and fitment-specific dimensions.

Key Features

• Part number: DMF084
• Dual mass flywheel design for OE-style drivetrain damping
• Flywheel diameter: 23.7 in. / 9.331 in.
• Flywheel inner diameter: 15.5 in. / 6.102 in.
• Flywheel cup depth/step height: -0.362 in. / -9.2 mm
• 130-tooth ring gear configuration
• Fits select 2006 BMW 550i and 2006 BMW 650i models

Detailed Description

LuK DMF084 is a clutch flywheel designed to match the original dual mass flywheel application on select BMW V8 models. The measured diameter, inner diameter, step height, and 130 teeth are important for proper starter engagement, clutch alignment, and drivetrain fitment. Using the correct DMF helps maintain the intended isolation between engine pulses and the transmission.

This part cross-references AMS Automotive 167084 for the same application. For BMW 550i and BMW 650i fitment, confirm the vehicle build date and transmission type before ordering. The part number DMF084 is the reference to verify when replacing the original flywheel on these applications.

What It Helps Address

• Excess drivetrain vibration from a worn flywheel
• Noise and harshness during clutch engagement
• Premature wear on engine mounts and transmission components
• Starter engagement issues related to ring gear wear
• Drivetrain damage caused by incorrect solid flywheel substitution

Installation Notes and Tips

Install only on the listed applications: Fits 2006 BMW 550i, N/A, to 05/31/2006; Non-Sequential Transmission, and Fits 2006 BMW 650i, N/A, to 05/31/2006; Non-Sequential Transmission. Verify the transmission type, build date, and tooth count before installation. Measure the existing flywheel and compare the diameter and step height to confirm the replacement matches the original specification.

Because this is a drivetrain component, professional installation and inspection of the clutch system, starter interface, and related hardware are recommended during service.

Quality Assurance

LuK positions this DMF as an original-style replacement engineered for the specific vehicle application rather than a universal substitute. The design focus is on preserving the damping characteristics expected in the original BMW drivetrain and reducing the risks associated with using a solid flywheel in its place.