Luk DMF020 Clutch Flywheel

LuK DMF020 Dual Mass Flywheel

The LuK DMF020 is a dual mass flywheel engineered for BMW 540i applications from 1997-2003. Built to match the original LuK design approach, it helps isolate drivetrain vibration and supports smoother clutch engagement in the BMW 540i drivetrain.

Key Features

• Dual mass flywheel for transmission and clutch service
• Flywheel diameter: 24.46 in. / 9.63 in.
• Flywheel inner diameter: 15.3 in. / 6.024 in.
• Flywheel cup depth/step height: -0.362 in. / -9.2 mm
• 130-tooth ring gear
• OE-style fitment for BMW 540i models listed below
• LuK part number DMF020 for catalog and cross-reference use

Detailed Description

LuK DMF020 is a clutch flywheel built for BMW 540i vehicles and tuned as a dual mass flywheel rather than a solid flywheel conversion. The design helps reduce drivetrain shock transfer, which is important in applications where vibration control, clutch feel, and gearbox protection matter. For BMW 540i owners replacing a worn flywheel, this LuK unit follows the original equipment style used to maintain proper driveline behavior.

This part cross-references 50-2791 and 167138 for the same application. The LuK DMF020 is also referenced by interchange numbers including 4150086100, 21201223581, DMF91138, and NDMF020.

What It Helps Address

• Clutch chatter during takeoff
• Excess drivetrain vibration at idle or low speed
• Harsh engagement caused by a worn flywheel
• Stress on engine mounts and transmission components
• Noise associated with flywheel wear or imbalance

Installation Notes and Tips

Confirm flywheel diameter, tooth count, and step height before installation. This LuK DMF020 is listed for Fits 1997 BMW 540i, N/A, from 07/01/1996 and Fits 1998-2003 BMW 540i, N/A. Always inspect the clutch system, rear main seal area, and related drivetrain components during flywheel replacement to avoid repeat labor. Proper torque procedures and manufacturer service specifications should be followed during installation.

Quality Assurance

LuK states this dual mass flywheel is fine-tuned for each vehicle application and is intended to avoid the problems that can occur when a solid flywheel is used in place of the original design. For BMW 540i service, the DMF020 is built around OE-style driveline control and vibration management.