The R1 Concepts drilled black brake rotor for 2006–2009 Buick Ascender (front left) is presented as the replacement rotor for the stated application. The product description lists a drilled rotor face and black finish. Install on the front-left hub and consider replacing the companion front-right rotor when performing brake service to keep axle components matched.
R1 06-09 Buick ASCENDER Front Left Drilled Black Brake Rotor