Transmission & xDrive

Flexible driveline coupling

Cushions torque pulses at a driveline connection.

Where it sits

At a propeller-shaft joint on applications using a flexible disc.

How it works

Bolts pass through reinforced sections while the disc allows limited movement and torsional compliance.

Think of it as

A reinforced rubber handshake between shafts.

Symptoms when it fails

Cracks, vibration or take-up clunks need inspection of the coupling and adjoining supports.

Lifespan

Use the exact gearbox and axle service guidance. Loads, seals, lubricant condition and driving use influence wear.

Repair cost

An accessible mount or seal differs from internal transmission work. Gearbox identification and diagnosis are essential to a useful quote.

The BMW angle

Enthusiasts often call a BMW flexible disc a guibo; not every shaft joint uses one.

Used in

BMW rear-drive, front-drive and xDrive applications as equipped; layouts differ by platform.

Sources
Same system

Transmission & xDrive