Information:

Attention: 1. Before installing any spark plug, always apply antiseize to threads. This assures easy removal of the spark plug and prevents corrosion and seizing. 2. For best high voltage insulation, to prevent arcing-over on the outside of the aluminum oxide insulator and to repel moisture, always apply a high quality silicone grease to the inside of the spark plug boot. 3. To gap spark plugs always use a spark plug gapping tool. Never pry the ground electrode with a screwdriver or similar object. This could permanently damage the ceramic insulator and the center electrode, making the spark plug inoperable and voiding the warranty.

Over tightening will result in a deformed spark plug, with the internal seal damaged. A spark plug damaged this way can lead to premature spark plug failure and even engine damage. Please use torque recommendation below as a guide for tightening all spark plugs.