VAG friction disk diamond coated 34X18X0,1 (VAG 06C105193B)
Sits between the crankshaft and crankshaft pulley / belt pulley.
Ideal for motors with high torque.
The problem of fitting is that at high torques between the crankshaft and the crankshaft timing pulley and camshaft can be become loose. This can cause defects on the crankshaft timing pulley and eventually the engine.
The disc increases the friction up to 300% and ensures a better connection of the crankshaft timing pulley with the crankshaft.
The diamond disc is only 0.13mm thick. So you need no longer bolts.