The R1 Concepts drilled black brake rotor for 2016–2021 Mercedes‑Benz C43 AMG is a replacement rotor intended for the rear left wheel, identified by the drilled face and black finish in the listing. It matches the application and years provided and is meant to be installed on the rear left side of the specified C43 AMG models when renewing worn or damaged rotors.

R1 16-21 Mercedes-Benz C43 AMG Rear Left Drilled Black Brake Rotor