Spark plug with iridium-based alloy chip

Spark plug with iridium-rhodium alloy discharge portion

Spark plug with low erosion electrode tip

Spark plug with lower operating temperature

Spark plug with marking layer composition

Spark plug with multi-layer firing tip

Spark plug with multi-point firing cap

Spark plug with multiple ground electrodes

Spark plug with nickel alloy electrode base material

Spark plug with noble metal chip joined by unique laser...

Spark plug with perpendicular knife edge electrodes

Spark plug with powder filling

Spark plug with pre-combustion chamber and venturi passage

Spark plug with pressure measuring device

Spark plug with pressure sensor

Spark plug with replaceable ground electrode

Spark plug with riveted sleeve

Spark plug with sealing ring around center electrode

Spark plug with simultaneously multi-firing cap

Spark plug with slant peripheral surface