Proform TDC Locator 66792; Piston Stop Adjustable, 14mm for GM, Ford, Chrysler
$17.31
Piston Top Dead Center Locator Tool Series:Piston Stop. Included 14mm Adapter. Make:GM, Ford, Chrysler. This tool provides a positive stop for the piston when locating top dead center. It screws into the spark plug hole.