Specifications

Spark Plug With Without With Without
Thread Size Torque Wrench Torque Wrench Torque Wrench Torque Wrench
GASKET TYPE:
10 mm 8-12 lb. ft. 1/4 Turn 8-12 lb. ft. 1/4 Turn
12 mm 10-18 lb. ft. 1/4 Turn 10-18 lb. ft. 1/4 Turn
14 mm 26-30 lb. ft. 1/2 to 5/8 Turn 18-22 lb. ft. 3/8 to 1/2 Turn
18 mm 32-38 lb. ft. 1/2 to 5/8 Turn 28-34 lb. ft. 3/8 to 1/2 Turn
TAPERED SEAT:
14 mm 7-15 lbs. ft. 1/16 Turn 7-15 lb. ft. 1/16 Turn
18 mm 15-20 lb. ft. 1/16 Turn 15-20 lb. ft. 1/16 Turn
Spark Plug Torque Recomendations
Overtightening 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.
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.
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