The Mastercool 43013 Vacuum-Type Cooling System Filler Kit combines a vacuum purge and refill tool, coolant hose, universal radiator cap, and other accessories. This kit aids in significantly shortening the time required for refilling new coolant by creating a vacuum within a cooling system. This process eliminates the need to undergo time-consuming air bleeding after refilling new coolant. The conical adapter offers a wide application to different radiator filler necks and the kit itself can be hooked underneath the vehicle's hood for easy access. This kit aids in minimizing the risk of the engine overheating.