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.
Where to BuyView Sonnax Part Instructions
Enter a Sonnax part number below to view its instructions. For general reaming instructions, click here.
TWO THUMBS UP. I am a loyal user of Sonnax products and they are a company that puts their customers first. Thank you for great products, and I look forward to future products!
B. Cole, Toronto, ON
My customers depend on me to keep their vehicles on the road. I depend on Sonnax to help me do that. Thanks Sonnax!
S. Moore, Moore's Transmission
Latest News
Get a New Sonnax Beanie – Now Available for a Limited Time Only
Stay warm this winter with an official Sonnax Performance beanie from the online fan store!
Available for a limited time only. Click here to order now.
Sonnax Holiday Hours
Heads up! We’re taking a few days off for the holidays to spend treasured time with our families and enjoy the festivities.
Sonnax will be closed:
- Dec. 24
- Dec. 25
- Dec. 28
- Dec. 31
- Jan. 1
Thank you for all your support. Wishing you a happy, healthy and prosperous New Year!
Shop the New Sonnax Fan Store
Get your official Sonnax gear in the new Sonnax Fan Store!
Choose from three cool designs including the popular Sonnax Performance and scary valve body designs, plus a brand new drivetrain design! All designs are available as a lightweight T-shirt, heavyweight T-shirt, v-neck T-shirt, or cozy hoodie.
Click here to shop now!
I am a Sonnax fan because no matter if I am rebuilding an everyday transmission or a race transmission, I can trust the quality of the Sonnax parts I choose.
C. Lentech, Lentech Automatics
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Sonnax tools save me time, money and come backs, I use them on every rebuild we do in my shop.
E. Sebris
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.
Careers at SonnaxAll of Sonnax product lines are top notch. I use Sonnax on all my builds.
F. Lane, FastLane Racing Transmissions