Genuine OEM Audi Brake Disc, part number 8J0615301G. This is a ventilated brake disc, designed to dissipate heat effectively during braking, preventing brake fade and ensuring consistent performance. It is a critical component of the braking system, responsible for converting kinetic energy into heat. Genuine OEM parts are manufactured to precise tolerances for optimal fit, performance, and longevity, ensuring the safety and reliability of your vehicle's braking system.