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.Featured Products Where to Buy
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
Guaranteed to deliver a combination of great performance and value you won’t find anywhere else.
Prevent repeat failure with one-piece, forged steel design expertly heat-treated for unbeatable durability.
Precision-engineered for unrivaled performance in high horsepower gas and diesel applications.
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
Get your free copy of the new GM 4L60/E catalog now! It's jam-packed with:
If you think that 4L60/E on your bench can’t be faster, tougher, stronger – think again. Thanks to groundbreaking Sonnax upgrades, performance specialists are bringing this veteran tranny roaring back to life with jaw-dropping performance and reliability unimaginable even a decade ago.
Sonnax will be closed on Monday, September 3, in honor of Labor Day. Wishing you a safe and happy holiday weekend!
Take the first step toward starting your new career at our upcoming job fair! We are currently hiring for permanent, full-time positions as:
We are an Equal Opportunity Employer
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
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 Sonnax
All of Sonnax product lines are top notch. I use Sonnax on all my builds.
F. Lane, FastLane Racing Transmissions