TESLA BLATNÁ, a.s. is a medium-sized Czech company producing parts for the automotive and electronic industry. We know what our customers need. We produce quality products and we know how to manage our processes efficiently. We perceive changes around us and react to them. We are a valued partner in the development and design of new products.

TESLA is the largest manufacturer of ignition cables in Europe and is also a leading supplier of other ignition parts for cars. Ignition cables, coils, modules and coil-on-plug boots - a system that produces and feeds spark into your car.

Since the second half of the 20th century, the TESLA brand has been synonymous with a wide range of high-quality automotive fuses and bulbs. These are small but crucial parts to protect you and your car.

TESLA's new product line is a dynamically growing range of sensors for industrial and automotive applications. Sensors have become an integral part of the automobile and their importance is increasing in all industries.

TESLA develops and manufactures motor control electronics for a wide range of industrial applications. We also develop energy management solutions for our customers. We help charge your machines' batteries while protecting them from damage.

We charge, but we can also discharge unnecessary energy. Power wirewound resistors are exactly the solution that can consume your machine's excess energy at the right moment.

We see how the world is changing and how it is becoming connected. Our precision platinum temperature and humidity sensors show you partial results. Our environmental modules already give you complete data that you can actively work with.




years of experience


countries with customers


thousands of products in the range


millions shipped products per year

We are convinced that only those who understand entire products and systems, and don't just think about partial steps and individual components, can be successful. TESLA offers all the advantages of a preferred supplier in one place - from basic development, product design to successful introduction into series production.



TESLA BLATNÁ has an extensive database of science and research projects. Together with our partners from universities and research institutes, we have developed and implemented innovative solutions, particularly in the areas of thin film, charging technology and power electronics for motor control. We have acquired a wide range of expertise and are ready to use it in the design and development of your new products.

Present us with your new project and we will show you what it means in practice to prepare a tailor-made solution.



  • A medium-sized company with an efficient management structure
  • Experience since 1958
  • Small, medium and large batch production
  • Wide standard assortment and customized solutions
  • In-house development and design
  • Cooperation with universities and research institutes
  • Active involvement of all employees
  • Open company culture based on mutual respect


TESLA respects and values everyone it comes into contact with. This can be company employees, business partners, government authorities or people living in the Blatna region.

TESLA wants to be seen as a reliable and stable employer and as a fair and responsible player in its environment. TESLA is aware that its success depends on the active development of the skills and support of its employees, on ethical behaviour in its operations and, last but not least, on close ties with the region in which the company is located.

We are proud that through our business we have the opportunity to support a wide range of social, cultural and sporting activities in the region. We will not save the world, but we will always strive to promote a healthy and confident society.

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company history


The history of TESLA dates back to 1946 in the former Czechoslovakia. The inspiration for the TESLA brand was the famous Serbian inventor, physicist and engineer Nikola Tesla. The TESLA national enterprise brought together dozens of individual companies throughout Czechoslovakia with a product range from small electrical engineering to products for military use. From 1990 onwards, the individual parts of the national enterprise became independent and were gradually privatised. TESLA BLATNÁ was taken into private hands in 1996.


Establishment of TESLA BLATNÁ


New catalogue – Coil-on-plug boots

We have just released a new catalogue of coil-on-plug boots. The new catalogue contains 160 types of coil-on-plug boots for more than 4000 car models. TESLA was once the first company to introduce this range to customers in Europe. With the publication of the new catalogue, we have further strengthened our current position as the largest supplier of this range on the European market.

The catalogue contains an alphabetical list of car models and the corresponding types of coil-on-plug boots. In the second part of the catalogue, the boots are traditionally sorted by their numbers. For each type there are images, basic technical data, and an overview of all models. The last part of the catalogue contains many OE numbers to make it as easy as possible to find the right type of the coil-on-plug boots.  At the end of the catalogue, we have written a small recommendation on how to properly care for the ignition system and how to extend its life in a very simple way.

The new catalogue is available for download on our website under Coil-on-plug boots.


Dielectric silicone grease

Every car owner tries to do only the best for his car. Ideally, if it is almost free, it can improve the functioning of the engine and at the same time extend the life of its important parts.

However, one option that is far from being used by everyone is the correct application of dielectric silicone grease.

We supply the grease free of charge as part of packages of ignition coils and coil-on-plug boots. This is a 0.5 g pack. The pack can also be purchased separately. In addition to this small pack, we also offer a 10 g pack in a tube, which will be especially appreciated by service and specialist shop owners. 


What are the main advantages of using dielectric grease?

- As a great insulator, grease improves insulation and helps prevent voltage leaks in the ignition system. This can significantly extend the life of ignition parts. This effect is achieved because the grease prevents arcing (unwanted electrical discharge).

- The grease significantly reduces the risk of the spark plug sticking to other ignition parts.

- The grease contains silicone, making it hydrophobic (waterproof). This helps repel moisture, preventing corrosion that could significantly degrade the quality of the electrical connection.

- The dielectric grease prevents dirt, water and contaminants from reaching the spark plug.

- The grease is an insulator that resists extreme temperatures, preventing thermal damage to parts.

- Silicone grease is a low-maintenance product that can remain effective for a long time.


How to apply silicone grease correctly?

Due to its non-conductive nature, dielectric grease must NOT be applied to metal contacts of ignition parts. Follow the instructions below when applying the grease:

1.            Remove the spark plug.

2.            Clean the spark plug and silicone boot with a cleaner and with a wire brush.

3.            Squeeze a small amount of silicone grease onto a cotton swab or brush.

4.            Use the swab or brush to apply a thin layer to the inside of the boot.

5.            Always ensure that the grease does not get on the metal contacts of the ignition parts.


The use of silicone dielectric grease offers several advantages. To achieve these benefits, it is essential to follow the basic above-mentioned guidelines for proper application. If you need help, please contact us at any time. We will be happy to advise you.


New COP boots

As of 01.08.2023, we are expanding our range of coil-on-plug boots and including new types. You can find all new boots in the search engine on our website and in the TECDOC database. For each type, we have traditionally attached a photo and product information including technical data as well as data on the models and car makes for which these boots are intended.

In addition to the new coil-on-plug boots, we have also thought about optimising packaging, transport, and associated costs. We have added new boxes to our range that are primarily designed for the smallest types and their accessories such as guide rings and springs.

A new catalogue of all our coil-on-plug boots will be published by the end of September 2023. The catalogue will be available for download on our website. 

Even before this expansion, TESLA BLATNÁ was already the largest supplier of coil-on-plug boots in Europe. With the addition of more than 40 new types, we have further strengthened this leading position.