Genuine OEM Volkswagen Cylinder Head Thread Pin, part number 030103397A. This specialized stud bolt is designed to secure various components to the cylinder head, playing a critical role in engine assembly integrity. It features threading on both ends for secure fastening. Measuring approximately 0.044 meters in length and weighing 0.011 kg, this thread pin is manufactured to exact specifications. Using genuine OEM fasteners ensures the correct thread pitch, material strength, and dimensions for proper torque application and long-term engine reliability.