A "spare part" is a component that can replace a broken or worn-out part in a machine or device. These parts are essential for maintaining the functionality and longevity of equipment, such as vehicles, appliances, and industrial machinery. Spare parts can be original equipment manufacturer (OEM) parts or aftermarket alternatives, depending on the needs and preferences of the user. In many industries, having a stock of spare parts is crucial for minimizing downtime and ensuring smooth operations. For example, in the automotive industry, car manufacturers often provide spare parts for their vehicles to facilitate repairs. Similarly, manufacturing plants keep spare parts on hand to quickly address equipment failures and maintain productivity.