About us
Autoventil A.D, founded in 1957, produces valves, valve guides and oil-based valve grinding pastes in accordance with the corresponding OEM specifications.
Our brand is well-known in more than 50 countries worldwide. We offer a wide range of valves from the oldest to the newest and most demanding models of internal combustion engines.
We would sincerely like to be a part of your workshop and actively help in engine repair and installation of the highest quality parts, so we invite you to contact us with any questions regarding valves, guides and valve grinding paste.
More about us
Special Interests
Our Brands
Intervalves
We are a company that has been engaged in the production of valves and guides since 1957, and since then has acquired numerous partners both in the OE and after-market markets. Currently, our products are sold in more than 80 countries around the world and we are recognized for the high level of quality because all our products are made according to the original technical specifications. We are the only 100% European manufacturer, and in addition to our parent company, in the last 15 years we have bought 3 other companies that are manufacturers of valves and guides: Tehnilaf Spain, Mi Serbia and Intervalves Switzerland. We also market our products under that brand because we apply the same manufacturing technique. In our product range, we have more than 4,500 valve positions and more than 1,200 valve positions, and if you express interest, we can send you a catalog.
Our Products

Valves for internal combustion engines
The high quality intake and exhaust valves made of martensitic and austenitic steels in monometallic and bimetallic versions in accordance to technical requirements of the original engine producers.
The application of various materials and ways of workmanship in the valve stem production
- Bimetallic (friction welded) intake and exhaust valves
- Valves with chrome plated stem, valves of high wear resistance characteristics.
- Valves filled in with sodium
- Valves with deflector
Various treatments of the valve stem end and grooves
- Valves with induction hardened grooves and the whole stem in all technical versions in accordance to specifications of engine producers.
- Valves with hardened stem part by welding of stellite alloy.
- Valves with induction hardened stem part.
Thermical treatment and combining of various materials in valve seat workmanship
- - Coating of the valve seat with stellite alloy
- Induction hardening of intake valve seat

Valve guides
Intake and exhaust high quality valve guides, made of cast iron and special bronze alloy, according to the technical requirements of the original engine manufacturers.
Our production capacities in the field of valve guides allow us to provide our clients at any time with valve guides for all types of vehicles with guaranted quality and delivery.
Here we present just part of our technical possibilities.
The latest technological advances allow us to produce valve guides of the most complex requirements in terms of shape, size, surface quality, various configurations of holes and outer surfaces characterized by high accuracy and precision.
Valve guide characteristics on section examples:
- External fuse channel
- End of the valve guide – can be narrowed or conical
- Expanded surface within the hole – can be placed at the end of valve guide (the second image) or in the middle of the valve guide
- Lubrication hole