Genuine OEM Volkswagen Brake Disc, part number 3QF615301J. This is a ventilated brake disc, typically used on the front axle, designed to provide effective stopping power. The ventilation channels between the disc surfaces help dissipate heat generated during braking, preventing brake fade and ensuring consistent performance. Manufactured to precise dimensions and material specifications for optimal braking. Genuine OEM brake discs are manufactured with exact tolerances and material composition for reliable performance, proper heat dissipation, and long service life.