DO-T38 is a high-performance, self-contained throttle actuator designed and manufactured by TRW Automotive. It provides control of the opening and closing of the throttle plate in response to commands from the engine management system. It uses electronics, sensors, and electro-mechanical components to allow for precision control of the throttle plate. DO-T38 is able to accommodate a wide range of engine configurations and also offers protection from heat, vibration, and pressure feedback from the engine. Depending on the application, it can also be integrated with additional functional components like fuel injectors.