The product is a set of OEM engine computer ECU connectors, pigtails, and wires for a 2015 Cadillac ATS. Manufactured by ACDelco, the connectors are designed for easy installation and are made of durable plastic. The terminal type is pin, with the OE/OEM part numbers 12663374AB4G and 12653998. These connectors are specifically made for the Cadillac ATS model and are a reliable solution for replacing damaged or malfunctioning ECU components.