The R1 Concepts drilled black brake rotor for 1973–1979 Audi 4000 (front left) is a drilled replacement rotor finished in black and specified for the front-left position. The overview names the classic Audi 4000 application and mounting side while calling out the drilled surface and cosmetic finish as the primary product details. It helps shoppers identify the correct front-left rotor for those model years.

R1 73-9 Audi 4000 Front Left Drilled Black Brake Rotor