The International LoneStar And ProStar 2008 Through 2011 Air Door Actuator is a high-quality, durable product designed to replace the original equipment part on specified vehicles. Made from durable plastic construction material, this actuator features electrical activation and is sold individually. It has undergone rigorous on-vehicle testing to ensure a proper fit and optimal performance. Specifically designed for International LoneStar and ProStar models with sleeper cabs from 2008 to 2011, this actuator is a direct OE replacement (Navistar 3599602-C1). Trust this reliable and practical HVAC heater blend door actuator for your vehicle's heating and cooling needs.