The R1 Concepts drilled black rear-left brake rotor for 2004 Pontiac GTO applications is listed as a direct replacement for the rear-left position. The product description specifies a drilled rotor with a black finish, aimed at restoring the braking surface on that model year. Choose this rotor when replacing a worn rear-left disc to match the listed fitment and appearance for the 2004 GTO.
R1 04-04 Pontiac GTO Rear Left Drilled Black Brake Rotor