The R1 Concepts Geo-Carbon drilled-and-slotted brake rotor is specified for the front-left position on 2003–2010 Chevrolet Cobalt models. The product description identifies R1’s Geo-Carbon rotor and a drilled-and-slotted face, indicating the rotor pattern and wheel location that correspond to the model years listed in the source. Application: 2003–2010 Chevrolet Cobalt — front left.
R1 03-10 Chevrolet Cobalt Front Left Drilled & Slotted Geo-Carbon Rotor