The R1 Concepts drilled black brake rotor for 1996–2003 BMW 525i is identified for the rear-left wheel and features a drilled face with a black finish. The description explicitly states the model years and the rear-left placement. Install this rotor when servicing the rear-left brake on compatible 1996–2003 525i vehicles; fitment is supported by the provided year/model text.

R1 96-03 BMW 525i Rear Left Drilled Black Brake Rotor