The R1 Concepts drilled black brake rotor for 2003–2005 GMC Sierra 1500 2WD HD (rear left) is a vehicle-matched replacement rotor as shown in the description. The rotor is drilled and finished in black per the source. Install on the rear-left location specified and replace paired components as needed when servicing that axle.

R1 03-05 GMC Sierra 1500 2WD HD Rear Left Drilled Black Brake Rotor