This Horizontal Head Camshaft is the most expensive of the items that make up this 013 Cylinder Head: Timing System assembly.
The twenty-three M620 2006 Eu (monster 620 Dark) 9151-1432e 013 Cylinder Head: Timing System component parts are all listed in this schematic.
A sample from the products for the 013 Cylinder Head: Timing System include: Elastic-stop Ring Nut, Stud Bolt M8x30, Circlip, Ring, Rear Pulley.