Mastercool 43014 Vacuum-Type Cooling System Filler Kit

The Mastercool 43014 Heavy-Duty Cooling System Vacuum Refill Kit provides an efficient way to refill automotive cooling systems while reducing the need for manual air bleeding. Using shop air and a Venturi-style vacuum generator, the kit creates a vacuum within the cooling system before drawing in new coolant, helping minimize trapped air and the risk of engine overheating. The universal conical adapter accommodates a variety of radiator filler necks and expansion tanks, making the kit suitable for both passenger and heavy-duty vehicles. A built-in vacuum gauge monitors vacuum levels, while the coolant valve provides control during the refill process. The kit includes the necessary adapters, valves and hoses for vacuum-assisted coolant refilling.