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This paper focused on the Concurrent Engineering which is a powerful model for product development and many firms need to remain in the competition market. It has an important role for the product development process via reduced a manufacturing time, higher product quality, lower cost in the manufacturing process and meeting customer requirements, which are key factors to determine the success. The paper shows the role played by the development of Concurrent engineering through its four dimensions after adding the fourth dimension called product sustainability design, which is complementary to other dimensions and is no less important, especially after environmental manufacturing has become a commitment to the environment and society itself. The four dimensions integrated for enhancing the competitiveness of firms. Results showed two aspects. Firstly, presented the role of concurrent engineering developed through its four dimensions in developing concurrent products, while the second aspect shows the contribution of each of the four dimensions of concurrent engineering to enhance competitiveness through its indicators. Findings revealed that the four-dimensional concurrent engineering contributes, through all its dimensions, to achieving rapid access to sustainable products that meet the desires of customers with low costs, which in turn was reflected in enhancing the competitiveness of firms.