Lisle 19700 Air Powered Valve Holder Tool for 14mm and 18mm Spark Plug Threads

The Lisle 19700 Air Powered Valve Holder is an essential tool for engine valve service work. This tool uses compressed air pressure to hold valves in place when replacing valve springs or valve stem seals without removing the cylinder head. By maintaining air pressure in the cylinder, it prevents valves from dropping into the combustion chamber during service.

Key Features:

• Two-step threaded fitting accommodates both 14mm and 18mm spark plug threads
• Heavy-duty 12-inch flexible hose provides easy access to spark plug holes and air supply connection
• Air pressure holds valve in position during spring and seal replacement
• Eliminates need for cylinder head removal for valve service
• Professional-grade construction for reliable performance

To use, thread the fitting into the spark plug hole, connect the opposite end to your compressed air supply, and maintain pressure while servicing valves. This tool is commonly used by professional mechanics and DIY enthusiasts for valve spring compressor work and valve seal replacement jobs.