Purpose: For effective quality assurance activities, BOM-based quality assurance method is presented. This study introduces various BOM conversions such as Q-BOM. T-BOM, and S-BOM based on M-BOM structure. Methods: Product quality control via Q-BOM manages inspection/audit information. overall supply-chain of product. part requirements. and inventory status, T-BOM manages part traceability, and S-BOM enables statistical control over key process and parts at various hierarchy levels. Results: Quality plan template was developed based on the study results of BOM system including Q~BOM. T-BOM, and S-BOM. Conclusion: Through BOM(Q-BOM. T-BOM, and S-BOM) study and development of quality plan template, more systematic and comprehensive quality management plan is achieved.