The product is a genuine OEM Engine Control Computer Module (ECM) for a 2003-2005 Lexus GX470. Programming is required for this specific module, and it is not a universal fitment part. The manufacturer part number is 89661-60B30, making it a direct replacement for the original ECM in the vehicle. It is important to note that this ECM is specifically designed for Lexus GX470 models from the specified years, ensuring compatibility and optimal performance