Press release #Automotive Aftermarket

The Bosch range of drive technologies is now complemented by timing belts in oil

Long service life due to special material mixture

  • Oil bath timing belts for current Citroën, Ford, Opel and Peugeot engines
  • Less friction losses, reduced fuel consumption and noise level combined with smoother engine operation in comparison with chain drives
  • The Bosch workshop range of timing belts covers more than 95 percent of all vehicles with timing belts on the European market
Heiderose Dreiner

Heiderose Dreiner >


Karlsruhe - Reducing the fuel consumption thus cutting CO2 emissions has become one of the key objectives of engine developers. The timing belts running in an oil bath used by several vehicle manufacturers for their engines with optimized fuel consumption are an important milestone on the path to reaching this objective. For several years, vehicle manufacturers worldwide have been using these special timing belts as part of their vehicle’s original equipment. Bosch now also offers these oil bath timing belts on the aftermarket thus complementing its range of drive technology products. The new offer includes versions for Citroën, Ford, Opel and Peugeot engines.

The new Bosch timing belts are made of a special and particularly resilient material mixture well-suited for oil bath operation. This is because oil damages the rubber mixture of conventional timing belts. As a result, the timing belts using the new technology feature a long service life and increased replacement intervals.

Compared to chain drives, timing belts operated in an oil bath significantly reduce the friction losses. This helps cutting the fuel consumption and consequently also the CO2 emissions. Concomitantly, the new drive technology provides additional advantages such as smoother engine operation, reduced noise level and less abrasion and wear.

Bosch workshop software Esitronic helps replacing timing belts

The timing belts run in an oil bath fed by the engine oil circuit. Therefore, it is particularly important to use the type of engine oil specified by the vehicle manufacturer and to stick to the specified oil change intervals. Using Bosch Esitronic diagnostic software, workshops can easily identify the replacement intervals specified by the manufacturers. At the same time, they are also provided with useful notes concerning the professional replacement of oil bath timing belts of different engines. Complemented by the new oil bath timing belts, the Bosch range now covers more than 95 percent of all vehicles equipped with timing belts on the European market. The timing belts offered on the aftermarket are subject the same quality standards and tests as those ones used as original equipment.

The Automotive Aftermarket division (AA) provides the aftermarket and repair shops worldwide with modern 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, products developed in-house and specifically manufactured for the aftermarket, as well as services. About 13,000 associates in more than 150 countries, as well as a global logistics network, ensure that spare parts reach customers quickly and on time. 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 15,000 workshops, and more than 1,000 “AutoCrew” partners.

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The Bosch Group is a leading global supplier of technology and services. It employs roughly 402,600 associates worldwide (as of December 31, 2021). The company generated sales of 78.7 billion euros in 2021. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. As a leading IoT provider, Bosch offers innovative solutions for smart homes, Industry 4.0, and connected mobility. Bosch is pursuing a vision of mobility that is sustainable, safe, and exciting. It uses its expertise in sensor technology, software, and services, as well as its own IoT cloud, to offer its customers connected, cross-domain solutions from a single source. The Bosch Group’s strategic objective is to facilitate connected living with products and solutions that either contain artificial intelligence (AI) or have been developed or manufactured with its help. 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.” The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiary and regional companies in some 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. With its more than 400 locations worldwide, the Bosch Group has been carbon neutral since the first quarter of 2020. The basis for the company’s future growth is its innovative strength. At 128 locations across the globe, Bosch employs some 76,100 associates in research and development, of which more than 38,000 are software engineers.

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