Spark plug for an internal combustion engine and method for...
Spark plug for an otto-type internal combustion engine
Spark plug for internal combustion engine
Spark plug for internal combustion engines
Spark plug having a creepage spark gap
Spark plug having combined surface and air gaps
Spark plug having dual gaps for internal combustion engines
Spark plug with a surface discharge section
Spark plug with a wide discharge gap
Spark plug with combined surface and air spark paths
Sparkplug with improved antifouling performance
Surface gap igniter