MV4535 Cooling System AirEvac Kit


The Mityvac MV4535 Cooling System AirEvac Kit refills automotive cooling systems in minutes without trapping air that can cause overheating. The kit combines a universal adapter with a compressed-air operated venturi vacuum to quickly eliminate trapped air by purging and refilling the cooling system under vacuum. Its new innovative design allows improved access into tight areas, and the patent pending valve coupler allows the operator to test the cooling system for leaks prior to refilling.


  • 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 adapter forms an airtight seal with all radiator and coolant bottle necks. No custom adapters are required.
  • Components connect using self-locking quick disconnects for easy and time saving assembly and breakdown.
  • Packaged in custom-molded case


  • 2.5 in. (64 mm) diameter diaphragm style vacuum gauge with hanging hook
  • Venturi vacuum
  • Valve coupler
  • Universal cooling system adapter
  • (2x) 30 in. (760 mm) extension hose
  • 5 ft. (1.5 m) refill hose
  • Custom molded case
  • User manual (English, French, Spanish)


15 in. Hg (51 kPa) @ 60 psi (4.1 bar) inlet pressure
24 in. Hg (81 kPa) @ 90 psi (6.2 bar) inlet pressure
25 in. Hg (81 kPa) @ 120 psi (8.3 bar) inlet pressure
Air inlet size
¼ in. NPT
Packaged weight5.0 lbs. (2.3 kg)
Packaged size17.7 x 12.8 x 4.2 in. (450 x 325 x 107 mm)

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