No one knows transmissions & torque converters like

Sonnax designs, develops and manufactures the highest quality aftermarket automotive products. We are the world’s largest full-line supplier of torque converter parts, and offer transmission and specialty driveline components through a global network of parts distributors.

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Enter a Sonnax part number below to view its instructions. For general reaming instructions, click here.

Latest News

December 03, 2019

Holiday Giveaway – Enter Now Through Dec. 31

We're giving away a $100 Visa gift card and prize pack full of cool Sonnax swag to three lucky fans!

Here's how to enter: You can either enter on Facebook, or you can send an email to [email protected] telling us one reason why you're a Sonnax fan. It’s that easy!

You have until 11:59 p.m. on Dec. 31 to submit your entry. Three lucky winners will be chosen at random and announced on Friday, Jan. 3. 

Good luck, and Happy Holidays from all your friends at Sonnax!

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November 12, 2019

Sonnax Closed for Thanksgiving

Sonnax will be closed Nov. 28-29 in celebration of Thanksgiving. Wishing you a very happy holiday filled with great food, fun and company!

August 27, 2019

Sonnax Closed on Labor Day

Sonnax will be closed Monday, Sept. 2, in observance of Labor Day. Wishing you a safe, happy holiday! 

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Enjoy a rewarding career and relaxing quality of life
in beautiful Southern Vermont.

Recognized as one of the Best Places to Work in Vermont and recipient of the Governor's Worksite Wellness Award, Sonnax is a leading supplier to the automotive aftermarket. We design, manufacture, test and distribute a wide variety of innovative, high quality products used to remanufacture torque converters, rebuild automatic transmissions, upgrade driveshafts and protect the driveline from over-torque damage.

Sonnax is one of the fastest growing companies in the state of Vermont. Our name has become synonymous with exceptional service, cutting-edge designs, technical knowledge and customer dedication. Join an exciting front-line team focused on developing and delivering the best products in the industry, a team whose imagination, hard work and results are rewarded.

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