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 Buy
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
Verified OE performance. Fits ’07-later units with 1.35 (GM6T70-1E) or 1.83 (GM6T70-1L) 3-5-R clutch regulator valve.
Specially designed to save the housing and restore normal operation.
Fits TH400, 4L80-E, Powerglide with 32-spline.
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
Sonnax will be closed Monday, Sept. 2, in observance of Labor Day. Wishing you a safe, happy holiday!
The Sonnax Technical Automotive Specialties Committee (TASC) Force recently met in Omaha, Nebraska to discuss emerging market needs, ideas for new parts and other hot-button issues. Forty trusted professionals attended this important meeting, representing 15 companies from the U.S and Canada, bringing an abundance of exciting ideas for new aftermarket solutions.
In welcoming the group, Sonnax President Steve Boyer commented on the investments Marmon has made in the year since acquiring the company, specifically on inventory and human resources. “We want to make sure Sonnax has the appropriate people in place to design, produce and deliver what you need, when you need it. We are also investing in our warehouse this year so we can get parts out even faster.”
This year’s gathering included a lot of great discussion about new product ideas and opportunities as well as a tour of Certified Transmission’s Omaha-based headquarters. More than 75 new product ideas were submitted, of which the group then votes on, based on which are most critical to develop to support the industry at-large. “The depth of knowledge of this group, and their enthusiasm for helping us develop fixes for problems is truly inspiring,” said Maura Stafford, Sonnax Transmission Specialties Product Line Manager.
Independent TASC members work for large shops, small shops, volume transmission and volume valve body rebuilders. Alongside Sonnax engineers and specialists, they are helping to develop repairs which will be used by their companies and by the rest of the transmission aftermarket. Their efforts help provide answers and repairs for the entire industry. Everybody wins.
Check out photos from the event on the Sonnax Facebook page.
Sonnax will be closed July 4-5 in celebration of Independence Day. Have a happy, safe holiday filled with family, friends and fun!
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