Lean burn spark plug

Long distance discharge gap type spark plug

Long life spark plug having consumable discharge member

Long life spark plug having minimum noble metal amount

Low cost spark plug manufactured from conductive loaded...

Low cost spark plug manufactured from conductive loaded...

Low radio interference spark plug

Low-voltage type igniter plug having a semiconductor for use in

Low-voltage type igniter plug having semi-conductor structure fo

Manufacture and method of assembly for a spark electrode

Metal member with chromate coat, spark plug with chromate...

Method for coating sparkplugs

Method for fabricating spark plug with piezoelectric sensor...

Method for manufacturing spark plug and spark plug

Method for manufacturing spark plug, and spark plug

Method for producing a composite center electrode and an electro

Method of making a spark plug including laser welding a noble me

Middle electrode with precious metal reinforcement and a...

Moisture resistant ceramic igniter for a burner

Multi fire spark plug