No one knows transmissions & torque converters like


No one knows transmissions & torque converters like 2008-sonnax-logo-white

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Sonnax Holiday Closing Notice

Sonnax will be closed on Thursday and Friday, Nov. 27-28 for the holiday weekend. Normal business hours will resume the following Monday. Wishing you and your family a very Happy Thanksgiving!

Visit Sonnax at PRI!

Visit Sonnax at booth #1255 to get a jump start on the 2015 racing season at the 27th Annual Performance Racing Industry Trade Show held at the Indiana Convention Center! Get an up-close look at all sorts of cutting-edge products and tech resources that we'll be featuring on display. Don’t miss one of the industry’s most exciting events at the racing capitol of the world! We look forward to seeing you...Read More

New Transmission Products Catalog - Vol. 9 Now Available!

The much-anticipated, new Transmission Products Catalog – Vol. 9 is jam-packed with 500+ new part listings, 12 new units featuring full valve body illustrations, valuable tech tips and more!

How to get your copy:

  • If you are a subscriber to Transmission Digest magazine, a catalog was mailed directly to you with the November issue. Gears subscribers will receive a copy at a later date.
  • Ask your Sonnax parts distributor to send you a copy...Read More
NEW! Sonnax High Performance Web Pages

The high performance section on the Sonnax website has undergone a complete rebuild! We’ve custom designed 5 new pages featuring the most popular performance applications, hot new parts, 4L60-E series interactive build charts and more! Start on the main high performance page and explore the area to find the ideal upgrades for your ultimate rebuild!

Sonnax TASC Force® Tackles Rising Industry Trends

The Sonnax TASC Force® held a meeting in Frankfurt, Germany following the 2014 Automechanika Show in September. The meeting received excellent attendance with participants from 10 countries ranging from all over Europe and the Middle East, making it a tremendous success.

The Sonnax Technical Automotive Specialties Committee (TASC) Force is composed of experienced transmission rebuilders and technicians who value...Read More

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