Fits nearly all newer vehicles including Mustang Ford GM Trucks LS1 LS2 LS3 4.8 5.3 6.0

Commonly used when valve springs or valve stem seals are replaced

Comes with two-step fitting for both 14 millimeter and 18 millimeter threads

Thread fitting to spark plug hole and other end to air supply

1/4" Air supply fitting not included (use your own specific fitting for your air compressor)

Heavy duty 12" flexible hose allows easy access to spark plug hole and air supply

Air pressure helps prevent the valve from falling into the combustion chamber  

14mm is the standard spark plug size for most all domestic and foreign vehicles