End-of-life product disassembly is an important process that makes the parts of a product available for diOE erent material and part recycling processes at end of its useful life. However, the e ciency of the disassembly process greatly aOE ects the economics of meeting the environmental goals set for the product. An important determinant of the e ciency of disassembly is the product con® guration. Therefore, it is essential for the designer to assess these implications of the con-® guration while designing a product for end-of-life disassembly. In this paper, a formal model, called the Con® guration-Value (CV) model, is proposed to evaluate and analyse the eOE ect of con® guration on disassembly. The model focuses on the rate of value extraction during the disassembly process. The model is used to identify the critical bottlenecks in the con® guration, to help the designer to identify the design changes that need to be made to improve the product disassemblability'. An example is presented to demonstrate the application of the proposed model.