Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool with M12 ...
$31.99
Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool with M12 or M14 Thread for GM Chevy LS1 LS3 LS6. Used for the gasonline engine cylinder with M14 or M12 spark plug, have to move out spark plug before install this tool.
