The R1 Concepts drilled-and-slotted black brake rotor for 1989–1990 Ford F-250 4WD (excluding Super Duty), front left, is listed as the front-left replacement for that application. The description specifies a drilled and slotted braking face with a black finish, identifying this rotor as the matching front-left unit for the indicated F-250 4WD years.
R1 89-90 Ford F-250 4WD (Excl Super Duty) Front Left Drilled & Slotted Black Brake Rotor