The Audi E-clutch hub assembly is a precision component in DCT/DSG or high-performance automatics. Key analysis:

1. Role – Links clutch packs to gearsets, enabling rapid torque transfer in multi-plate setups.

2. Material – Forged steel or billet alloy, hardened for extreme stress/heat resistance.

3. Design – Features intricate splines, lubrication channels, and often integrated synchronizer surfaces.

4. Failures – Spline wear, thermal distortion, or micro-fractures from aggressive shifts (causing shudder, slippage, or DTCs like P189C).