DOHC, or Dual Overhead Camshaft, is an engine design that features two camshafts located in the cylinder head for each engine bank. This setup allows for more precise control of the intake and exhaust valves, improving engine performance and efficiency. The DOHC configuration is commonly found in modern vehicles, as it enables higher RPMs and better airflow. This design can lead to increased horsepower and torque, making it popular among performance-oriented cars. Overall, DOHC engines are known for their ability to deliver a balance of power and fuel efficiency.