BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel
BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel - Image 2
BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel - Image 3
BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel - Image 4
BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel - Image 5
BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel - Image 6
BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel - Image 7
BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel - Image 8
Category:

BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel

(33 Customer Reviews)

In Stock

$2,500.00

BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel

Part Number: 21212284348 (Standard for F80/F82/F83 M-DCT)

Manufacturer: LuK (Original Equipment Manufacturer)

The Dual-Mass Flywheel (DMFW) for the M-DCT (DKG) transmission is a critical dampening component situated between the $S55$ engine and the GS7D36SG d

Category:

BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel

Part Number: 21212284348 (Standard for F80/F82/F83 M-DCT)

Manufacturer: LuK (Original Equipment Manufacturer)

The Dual-Mass Flywheel (DMFW) for the M-DCT (DKG) transmission is a critical dampening component situated between the $S55$ engine and the GS7D36SG dual-clutch gearbox. Unlike a traditional manual flywheel, this unit is specifically engineered to handle the rapid-fire torque interruptions of a dual-clutch system while isolating the sensitive mechatronics from engine vibrations.

Technical Specifications

  • Compatibility: * BMW M3 (F80): 2014–2018

    • BMW M4 (F82/F83): 2014–2020

  • Engine Match: BMW $S55$ (3.0L Inline-6 Twin-Turbo).

  • Transmission Match: 7-Speed M-DCT (Double Clutch Gearbox).

  • Construction: Two independent masses connected by a complex internal spring and damping system.

Key Engineering Functions

  • Vibration Isolation: The $S55$ engine produces significant torsional vibrations. The DMFW absorbs these oscillations before they reach the transmission, preventing “gear rattle” and protecting the dual-clutch’s internal synchronizers.

  • Crankshaft Protection: By absorbing the shock of lightning-fast DCT shifts (especially in Drivelogic Mode 3), the flywheel reduces the stress on the crankshaft main bearings.

  • Rotational Inertia: Precision-weighted to ensure the engine revs freely (essential for the M4’s 7,600 RPM redline) while providing enough mass to maintain a smooth idle and low-speed “creep” functionality.

Professional Installation & Diagnostic Notes

When handling this component for inventory or replacement, keep the following technical points in mind:

  1. Wear Limits (Rocking/Rotational Play): A used DMFW must be tested for “play.” There is a specified limit for both rotational movement (free travel) and tilt (rocking). If the internal springs are fatigued, you will hear a distinct “clunking” or “chatter” at idle that disappears when the transmission is engaged.

  2. One-Time Use Hardware: The 8 mounting bolts (M10 or M12 depending on production date) are stretch bolts. They must be replaced during every installation to ensure the flywheel does not back off the crankshaft.

    • Torque Spec: Typically $60\text{ Nm} + 90\text{°}$ (Always verify with current ISTA data for the specific VIN).

  3. Pilot Bearing: Always inspect or replace the pilot bearing located in the center of the flywheel. A seized bearing can cause the DCT to have difficulty disengaging the clutches, leading to rough shifting or “creep” issues.

  4. Resurfacing Warning: Never resurface a Dual-Mass Flywheel. The internal grease and spring mechanisms cannot withstand the heat of a grinding machine, and the debris from resurfacing can enter the internal dampening chamber, leading to total failure.

Inventory Tip: If selling a used DKG transmission, the DMFW is often sold separately. However, bundling it as a “complete clutch/flywheel set” is highly recommended for buyers performing a conversion or major overhaul.

Average Rating

4.55
33 Review
5 star 55%

4 star 46%

3 star 0%

2 star 0%

1 star 0%

33 reviews for BMW M3 F80 M4 F82 F83 Transmission DKG Dual Mass Flywheel

  1. Liam Carter (verified owner) –

    BMW Wheels

  2. Joseph Taylor (verified owner) –

    Used for UI layout.

  3. Noah Thompson (verified owner) –

    Headlights appear bright and clear.

  4. Michael Hughes (verified owner) –

    Stable ride shown in preview.

  5. Samuel Harris (verified owner) –

    Used for UI testing.

  6. Alexander Lewis (verified owner) –

    Engine performance appears smooth in the interface view.

  7. Sophie Young (verified owner) –

    Used in layout mockup.

  8. Samuel Harris (verified owner) –

    Wheels appear durable and well-finished.

  9. Amelia Brooks (verified owner) –

    Wheels appear strong and stylish.

  10. Lily Anderson (verified owner) –

    Reliable stop behavior in design.

  11. Thomas Richardson (verified owner) –

    Reliable stop behavior in design.

  12. Amelia Foster (verified owner) –

    Shock system appears effective.

  13. Oliver Mitchell (verified owner) –

    Bumper appears strong and well-built.

  14. Ethan Reynolds (verified owner) –

    Braking response appears fast and stable.

  15. Grace Adams (verified owner) –

    For testing purposes only.

  16. Grace Adams (verified owner) –

    Gearbox operates smoothly in demo.

  17. Oliver Scott (verified owner) –

    Engine performance appears stable.

  18. Abigail Johnson (verified owner) –

    BMW Headlights

  19. Grace Adams (verified owner) –

    Brakes respond instantly in simulation.

  20. Lucy Foster (verified owner) –

    Sample UI text.

  21. Penelope Mitchell (verified owner) –

    UI testing content.

  22. Amelia Foster (verified owner) –

    No issues shown in test environment.

  23. Thomas Lewis (verified owner) –

    Used for UI layout and design testing only.

  24. Benjamin Morgan (verified owner) –

    Very smooth visual performance.

  25. Grace Adams (verified owner) –

    Well-executed UI display.

  26. James Parker (verified owner) –

    BMW Transmission

  27. Amelia Brooks (verified owner) –

    Excellent design presentation.

  28. Matthew White (verified owner) –

    BMW Transmission

  29. Jack Richardson (verified owner) –

    Braking response looks fast and controlled.

  30. Brooklyn Carter (verified owner) –

    Excellent design presentation.

  31. Aaron Bennett (verified owner) –

    Nice balance of style and strength.

  32. Christopher Nelson (verified owner) –

    Very smooth and refined behavior shown.

  33. Evelyn Clark (verified owner) –

    Strong and responsive braking feel.

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