Cooling System AirEvac Test Kit The kit combines Mityvac’s universal cooling system adapter with a powerful, compressed-air-operated venture vacuum to quickly install and evacuate air from an empty cooling system . Once purged of air, the system can be monitored for leaks before using the vacuum to draw in new coolant . Uses shop-air to quickly evacuate an automobile’s cooling system for vacuum leak testing . Refills cooling system in minutes without trapping air that can cause overheating . Universal cooling system adapter replaces more than 20 individual adapters for cars, vans, light- and heavy-duty trucks . Components connect using self-locking quick-disconnects for easy and time saving assembly and breakdown . Patent-pending adapter cam mechanism ensures an air-tight seal with radiator and coolant bottlenecks . Includes: . Universal Cooling System Adapter with Diaphragm Gauge, Brass Flow Control Valve, and Quick Connect Coupler. Venturi Vacuum Generator with Muffler . Coolant Refill Hose with Inlet Screen . Custom-Molded Case MV4533