The product is a genuine OEM 1988 Toyota Celica Engine Brain Module (EBX ECU) with the part number 89661-20441. It is specifically designed for a 2.0L 5-speed 4-cylinder 3S-FE engine in a ToyotaCelica model from the year 1988. This direct replacement ECU is essential for controlling the engine's performance and ensuring optimal functionality of the vehicle's systems. Made by Toyota, this engine brain module is a reliable and essential component for maintaining the overall performance of the 1988 Toyota Celica.