The R1 Concepts drilled-and-slotted black brake rotor for 1999–2006 BMW 323i (rear left) is offered as a direct-replacement rotor for that wheel position. The listing records a drilled and slotted surface with a black finish. Use this rotor when replacing a rear left unit on compatible 323i model years; confirm the vehicle year and side to ensure the part fits as intended.
R1 99-06 BMW 323I Rear Left Drilled & Slotted Black Brake Rotor