The Mastercool 43012 Vacuum Coolant Refill Kit creates a vacuum inside the cooling system to draw coolant in quickly and evenly. This process eliminates trapped air pockets and removes the need for time consuming air bleeding after service. The kit includes a sealing collar with three rubber bushings that fit a wide range of radiator neck sizes, ensuring a secure seal during operation. By preventing air pockets, the system helps reduce the risk of overheating and improves overall reliability after cooling system repairs. The components are stored in a durable blow molded case for protection and organization. Built for professional technicians, the 43012 improves efficiency and consistency in coolant service procedures.
