The product is a set of OEM engine computer connectors, plug harnesses, and pigtail wires specifically designed for the 2021 Mazda CX5. Manufactured by DENSO, the connectors are easy to install and do not require any programming. Made of plastic and originating from Spain, the connectors use pin terminals and are ideal for replacing worn-out or damaged parts in the car's Engine Control Unit (ECU) system. These connectors ensure a secure and reliable connection for optimal performance of the vehicle's engine.