This study combines meta-analysis with structural equation modeling to examine the impact of service quality (SQ) on customer satisfaction (CS), attitudinal loyalty (AL), and purchase intention (PI). Findings from 86 articles containing 115 independent samples and 161 effect sizes representing 42,877 customers are used to test a model of the relationships among the above-referred variables. Results show that SQ has a large effect on CS, AL, and PI. Also, SQ is indirectly related to AL and PI. Because AL and PI are critical indicators of a customer's willingness to engage in a relationship with the firm, this study provides clear evidence that SQ plays a vital role in a firm's quest for building long-term relationships with customers. The effect of measurement and contextual moderators is also analyzed.