Spare parts, diagnostics, workshop equipment, workshop concepts

Innovations from Bosch have enabled reliable ignition in internal combustion engines since 1902 111 years of Bosch spark plugs

  • Current Bosch product range comprises around 1250 types of spark plug
  • Virtually all vehicle manufacturers now place their trust in Bosch spark plugs
  • Modern spark plugs protect the engine and catalytic converter
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  • March 01, 2013
  • Spare parts, diagnostics, workshop equipment, workshop concepts
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press release

On January 7, 1902, Bosch was granted the patent for a high-voltage magneto in combination with a spark plug. This invention was the first to guarantee reliable ignition of the air-fuel mixture in internal combustion engines, meaning Bosch spark plugs helped to achieve a breakthrough in the automotive industry. For 111 years, Bosch spark plugs have played an essential role in the development of high-performance, economical and environmentally-friendly engines. Today, virtually all vehicle manufacturers put their trust in Bosch spark plugs in their original equipment. Boat engines, jet skis, garden and forestry equipment, stationary gas engines, water pumps and emergency generators also use Bosch spark plugs.

111 years – 11 billion Bosch spark plugs
In the last 111 years, Bosch has developed over 20,000 different types of spark plug and produced over 11 billion spark plugs in total. In addition to production in Germany, spark plugs are also currently being manufactured at Bosch locations in Brazil, China, India and Russia. Working closely with engine manufacturers worldwide, Bosch engineers have consistently developed the spark plugs since their conception. The current Bosch product range comprises around 1250 types of spark plug with 26 different electrode layouts. Thanks to innovative material combinations, complex construction details and state-of-the-art manufacturing techniques, Bosch spark plugs enable clean and efficient fuel combustion in gasoline engines and protect both the engine and the catalytic converter. Among motorists, Bosch spark plugs have been synonymous with quality and reliability for many years. For instance, readers of the German automobile magazine "auto motor und sport" have chosen Bosch as "Best Brand" in the spark plug category every year since 2005.

111 years of Bosch spark plugs: Overview
  • 1902: Bosch granted the patent for a high-voltage magneto in combination with a spark plug
  • 1914: First Bosch spark plug factory opened in Stuttgart.
  • 1927: "Heat range" concept introduced by Bosch - Bosch still uses the same standard measurement for a spark plug's thermal productivity today. It is important for ensuring optimal calibration in each engine
  • 1939: Spark plug factory opened in Bamberg.
  • 1968: One billion spark plugs produced by Bosch
  • 2012: Eleven billion spark plugs produced by Bosch
  • 2013: 111-year anniversary of Bosch spark plugs

The Automotive Aftermarket division (AA) provides the aftermarket and repair shops worldwide with a complete range of diagnostic and repair shop equipment and a wide range of spare parts – from new and exchange parts to repair solutions – for passenger cars and commercial vehicles. Its product portfolio includes products made as Bosch original equipment, as well as aftermarket products and services developed and manufactured in-house. More than 18,000 associates in 150 countries, as well as a global logistics network, ensure that some 650,000 different spare parts reach customers quickly and on time. In its “Automotive Service Solutions” operations, AA supplies testing and repair-shop technology, diagnostic software, service training, and information services. In addition, the division is responsible for the “Bosch Service” repair-shop franchise, one of the world’s largest independent chains of repair-shops, with some 17,000 workshops. In addition, AA is responsible for more than 1,000 “AutoCrew” partners.

Additional information can be accessed at

The Bosch Group is a leading global supplier of technology and services. It employs roughly 375,000 associates worldwide (as of December 31, 2015). The company generated sales of 70.6 billion euros in 2015. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiaries and regional companies in some 60 countries. Including sales and service partners, Bosch’s global manufacturing and sales network covers some 150 countries. The basis for the company’s future growth is its innovative strength. Bosch employs 55,800 associates in research and development at 118 locations across the globe. The Bosch Group’s strategic objective is to deliver innovations for a connected life. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.”

Further information is available online at and,

PI8038 - March 01, 2013

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