About this item Fitment: Replacement for Mercury/ Mariner and Chrysler Force Engines, ZF695 Replace Part Number: 18-8819-1 Size: The spark plug wire length is 7 inches and the ignition wire core is 7 mm in diameter Easy Installation: Tested before shipment. Easier to insall and works perfect, saving you time and effort Package Includes: 3 pcs spark plug wire lead