The LS400 Engine Control ECM by DENSO 89661-50433 is a direct replacement unit specifically designed for Lexus vehicles. It requires programming and comes with a manufacturer warranty of unspecified length. This original genuine factory OEM PCU CBX Brain Module Unit is a key part in controlling the engine of your vehicle, and is compatible with interchange part numbers 89661-50433 175200-2700 8966150433 1752002700. Trust in this high-quality product to ensure optimal performance and reliability for your Lexus vehicle.