‘配件’ (pèi jiàn) literally combines ‘配’ (to match, to fit, to supply) and ‘件’ (a measure word for items or objects), meaning a component part designed to be added to or replace part of a larger system or device. It refers specifically to interchangeable, functional parts—such as screws, filters, batteries, or circuit boards—that support the operation, maintenance, or repair of machinery, vehicles, electronics, or appliances.

This term is widely used in technical, industrial, and consumer contexts: auto repair shops stock car ‘配件’, computer stores sell laptop ‘配件’, and manufacturers produce ‘配件’ to meet original equipment specifications. Unlike generic ‘零件’ (líng jiàn), which can refer to any small mechanical part—even raw or unprocessed ones—‘配件’ emphasizes purpose-built, ready-to-install components intended for assembly, replacement, or upgrading. It carries a slightly formal or professional register and rarely appears in casual daily conversation outside repair or procurement settings.