The International And Navistar ProStar 2007 Through 2010 Evaporator Core is a practical and reliable product designed to fit most International and Navistar ProStar 2007-2010 models with a sleeper unit. With its natural finish, this evaporator core is both durable and efficient. Sold individually, it is a cost-effective solution for replacing worn-out or damaged evaporator cores. OEM and aftermarket numbers 6633870 and 3599580C2 ensure compatibility and ease of installation. Upgrade your vehicle's cooling system with this high-quality evaporator core for improved performance and comfort.