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Luk DMF085 Clutch Flywheel
| Brand | Luk DMF085 |
|---|---|
| Flywheel Cup Depth/Step Height | -9.2 |
| Flywheel Cup Depth/Step Height | -0.362 |
| Flywheel Diameter | 9.626 |
| Flywheel Diameter | 24.45 |
| Flywheel Inner Diameter | 6.024 |
| Flywheel Inner Diameter | 15.3 |
| Number of Teeth | 130 |
| Fits | BMW · 4 vehicles |
Dual mass flywheel. Helps prevent damage that solid flywheels can cause.
Fine-tuned design. Individually calibrated for each application.
130-tooth construction for dependable clutch engagement.
Cross-references 50-2826, 4150385100 and 21207536564 for the same application. See all 5.
LuK DMF085 Dual Mass Flywheel
The LuK DMF085 is a dual mass flywheel engineered for BMW V8 applications that require controlled drivetrain damping and precise clutch engagement. It is a direct-fit clutch flywheel solution for 2004-2005 BMW 545i and 2004-2005 BMW 645Ci models.
Key Features
- Dual mass flywheel design for smoother torque transfer
- 24.45 in. / 9.626 in. flywheel diameter
- 15.3 in. / 6.024 in. inner diameter
- 130-tooth ring gear
- -0.362 in. / -9.2 mm cup depth or step height
- OE-style fitment for BMW 545i and BMW 645Ci applications
Detailed Description
Built by LuK, the DMF085 is tuned for the specific drivetrain demands of the 2004-2005 BMW 545i and 2004-2005 BMW 645Ci. The dual mass construction helps isolate engine vibration from the transmission, which is important in high-torque BMW applications where driveline refinement and component protection matter. This part number, DMF085, is a direct replacement choice for owners servicing the clutch and flywheel system on these vehicles.
This part cross-references 50-2826 and 4150385100 for the same application.
What It Helps Address
- Excess drivetrain vibration during acceleration and cruising
- Harsh clutch take-up or inconsistent engagement feel
- Wear on engine mounts caused by torsional vibration
- Transmission stress related to improper flywheel damping
- Crankshaft and driveline damage associated with solid flywheel conversions
Installation Notes and Tips
Verify flywheel diameter, tooth count, and step height before installation. Inspect the clutch assembly, pilot components, and related drivetrain parts for wear while the transmission is removed. For BMW 545i and BMW 645Ci service, confirm the vehicle’s model year and transmission specifications against the existing flywheel before final assembly.
Quality Assurance
LuK is the original equipment source behind many OE clutch and flywheel applications, and the DMF085 follows that engineering approach with vehicle-specific tuning for BMW fitment. Use this part when replacing a worn dual mass flywheel on 2004-2005 BMW 545i or 2004-2005 BMW 645Ci models.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | BMW | 545i | 4.4L | V8 | N/A | — |
| 2005 | BMW | 645Ci | 4.4L | V8 | N/A | — |
| 2004 | BMW | 545i | 4.4L | V8 | N/A | — |
| 2004 | BMW | 645Ci | 4.4L | V8 | N/A | — |
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