The General Motors And Mack 1991 Through 2019 Heavy Duty Air Door Actuator is a reliable and practical solution for your HVAC system. Made with durable plastic construction material and featuring electrical activation, this actuator is a direct replacement for the original equipment part on specified vehicles. It has undergone rigorous on-vehicle testing to ensure a proper fit and optimal performance. With direct OE replacement numbers for General Motors and Mack, this actuator fits most vehicles from 2000 to 2018. Trust in its quality construction and enjoy the benefits of a functioning HVAC system.