Automatic Transmissions


Since 1978, TransTec® brand automatic transmission seal kits have been synonymous with the highest quality and dependability. As a brand of Freudenberg-NOK Sealing Technologies, the world’s largest producer of sealing products, TransTec is the only kit packager that is also an original equipment manufacturer of transmission components, TransTec is also ISO-certified for the quality assurance you can’t get anywhere else. It’s one of the reasons why more transmission professionals install TransTec kits than all other kits combined.

Our Latest Transmission Products

Essential Tools for Transmission Rebuilders

In addition to our automatic transmission seal kits and components, TransTec has also developed an array of tools specifically designed for today’s rebuilder. From gasket removal solutions to application-specific tools that allow you to directly service the bonded lip seal that is riveted to the D-clutch drum, instead of replacing the entire drum assembly — TransTec is developing the tools you need to improve the productivity and profitability of your shop.

TransTec® Transmission Seal Kits available worldwide

TransTec® brand transmission seal kits have been supplied to the automotive aftermarket since 1978 and are available through distributor all around the globe.

Need to ID the Transmission in a Specific Vehicle?

Access the TransTec® Online Transmission Application Guide — the original guide to automatic transmissions by vehicle.

Check Out Our Blog

Backed by over 35 years of technical and practical expertise and experience in the automotive aftermarket, The TransTec Blog is where today’s transmission rebuild and power steering rebuild shops and professionals can learn more about the technologies and processes that drive the industry.