Spark plug with engine cylinder pressure sensor

Spark plug with enlarged center electrode and gap

Spark plug with excellent impact resistance conductive seal,...

Spark plug with fine wire ground electrode

Spark plug with glaze and marking

Spark plug with glaze coating

Spark plug with grooved, tapered center electrode

Spark plug with ground electrode having diverging prongs

Spark plug with ground electrode having mechanically locked...

Spark plug with heat conducting sleeve for center electrode

Spark plug with high capability to ignite air-fuel mixture

Spark plug with high insulation properties and high...

Spark plug with hot/sharp ground electrode

Spark plug with igniting portion chip composition

Spark plug with improved noble metal chip

Spark plug with inclined electrode spark surfaces

Spark plug with increased durability and carbon fouling...

Spark plug with increased durability and carbon fouling...

Spark plug with increased pressure resistance

Spark plug with Ir-alloy chip