How a car works

All partsBMW M4 CSLDrivetrainDriveshaft › Front U-joint

Front U-joint

Part of Driveshaft · about $210 to replace

What it is

Flexible disc coupling at the gearbox end.

What it does

Absorbs angular misalignment and driveline shock.

How it fails

Cracked rubber gives clunk on throttle transitions.

MaterialRubber/fabric flex disc, steel flanges
Spec3-bolt
110 mm
Front U-joint highlighted on the car

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