Procedural justice is often recognized as the key antecedent of police legitimacy. However, less is known about how the components of procedural justice, treatment and decision-making quality, influence perceptions of police legitimacy. This study utilizes a 2 x 2 x 2 survey experiment to explore the direct effects of the components of procedural justice, and the moderating effects of driver race, on perceptions of encounter-specific fairness and legitimacy. Results indicate that treatment quality is a more salient predictor of encounter-specific fairness and legitimacy than decision-making quality. In addition, simple effects analyses reveal that driver race moderates perceptions of encounter-specific fairness but not encounter-specific perceptions of legitimacy. The findings imply that police officers should emphasize respectful treatment during encounters with the public.