A manufacturing defect occurs when a particular product is somehow manufactured incorrectly and in its condition is unreasonably dangerous. The plaintiff must show that the product was in its defective condition when it left the manufacturer’s possession and that it was unaltered at the time it caused the injury. In short, the consumer must prove that the manufacturer caused the defect. If the defective part was a component in a larger product (for example, a defective tire on an automobile), the component producer may be liable, as well as the manufacturer of the larger product.