COMP Cams 5657 - Tool, Air Operated Valve Holder 14/18mm

COMP Cams Air Operated Valve Holder is the perfect accessory when it's time to replace valve springs or valve stem seals. There is no easier way to keep valves from falling into the cylinders when changing valve springs. Simply thread one end into the spark plug tube and attach the other end to an air compressor. Air pressure will keep the valve from falling into the cylinder, allowing you to easily work without taking the cylinder head off. With a heavy duty 12? flexible hose and convenient two-step fitting for both 14mm and 18mm threads, access to both the spark plug hole and air supply is never a problem.

Two step fitting works with 14mm and 18mm threads; Constant air pressure keeps valves from accidentally falling into the combustion chamber; Perfect accessory when replacing valve springs or valve stem seals but don't want to remove the heads; Heavy duty 12" flexible hose easily stretches from the spark plug hole to your air supply;