A part number is a unique identifier assigned to a specific component or item within a product line. It helps manufacturers, suppliers, and customers easily identify and differentiate between various parts. Part numbers are essential for inventory management, ordering, and tracking components in industries such as automotive, electronics, and manufacturing. Typically, a part number consists of a combination of letters and numbers that convey information about the item, such as its type, size, or version. For example, in the context of automotive parts, a part number can indicate a specific engine component or replacement part needed for repairs or maintenance.