Brian Tooley Racing BTR Valve Spring Compressor Air Tool Hose for LS1 LS2 LS3 4.8 5.3 6.0 - BTR Brian Tooley Racing, 85300

• Valve Spring Compressor Air Tool Hose Brian Tooley BTR 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