The R1 Concepts drilled black brake rotor for the rear right of 2008–2021 Ford E-350 Super Duty is specified as the rear-right replacement rotor across those years. The description calls out a drilled rotor face and black finish for the rear-right position. Verify the side and year span to ensure correct fitment for the E-350 Super Duty application.
R1 08-21 Ford E-350 Super Duty Rear Right Drilled Black Brake Rotor