Did you ever have a problem with your cooling system that just left you stumped? Craftsman makes this Cooling System Pressure Tester to help you along. You replace the radiator cap with the tool, and it brings the cooling system up to operating pressure so you can safely check for leaks with the engine off. You can also monitor the pressure over time and monitor for pressure drops.
The tool will measure up to 30 pounds of pressure. It comes with four double-ended adapters, giving you a total of eight adapters to cover most makes and models of cars, trucks, and some motorcycles. An included blow-molded case keeps everything in its place.
This tester will run you $120.