Piècesautos-online. fr is an online marketplace for guaranteed used automotive parts, operated by the Caréco network. Its website lets customers search for components by vehicle make and model, with an advanced search option to help locate a suitable part.

The catalogue covers a wide range of vehicle brands and parts, including engines, gearboxes, starters, alternators, radiators, headlights, bumpers, mirrors, and window mechanisms. Listings include vehicle details, prices, stock location, and, where specified, a one-year guarantee. The site reports a live inventory of more than 116,000 parts and advertises delivery within 24 to 48 hours, with free delivery in mainland France.

Customers can buy online, manage orders through an account, or contact the business for advice; telephone support is available on weekdays during stated business hours, with no additional call charge. Caréco serves customers through four centres in Paris, Lyon, Saint-Étienne, and La Verpillière. The site also provides information about ordering, delivery, and its network, alongside a professional customer area