The product is a 2011 Kia Optima Engine Computer Module (ECM) with the Manufacturer Part Number 39111-2G866 and other part number 5WY4E64B. This Engine Control Unit (ECU) is an OE Spec direct replacement part from Korea, Republic of. It has a gray, white, and black surface finish and must be reprogrammed before installation. The ECM comes with no manufacturer warranty and is designed for front placement on the vehicle.