Since 1936, NGK Spark Plugs has been the world leader in technology, innovation, and world-class quality in the design of spark plugs and oxygen sensors. Our commitment to excellence continues to be the driving force behind the company’s advanced research and development programs. Ceramics, at the core of superior spark plug technology, spawned the creation of NTK Technical Ceramics. Additional lines of products followed; NGK Wire Sets, NTK Oxygen Sensors, NTK Knock Sensors and a variety of other NTK sensors. Today, the company manufactures spark plugs and oxygen sensors for virtually every automotive manufacturer in the world, and has set some groundbreaking industry firsts along the way.