Spark plug attachment

Spark plug attachment structure and spark plug therefor

Spark plug cap and spark plug fitting method

Spark plug casing and spark plug having the spark plug casing

Spark plug center electrode assembly

Spark plug center electrode of alloy material including aluminum

Spark plug configuration having a metal noble tip

Spark plug configuration having a noble metal tip

Spark plug construction

Spark plug construction for enhanced heat transfer

Spark plug construction with temperature responsive ground wires

Spark plug copper core alloy

Spark plug design having two electrically isolated center electr

Spark plug designed to enhance strength of joint of noble...

Spark plug electrode for use in internal combustion engine

Spark plug electrode including a profiled noble-metal part

Spark plug electrode tip for internal combustion engine

Spark plug electrodes

Spark plug element having defined dimensional parameters for...

Spark plug employing both corona discharge and arc discharge and