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
Enter a Sonnax part number below to view its instructions. Learn about reaming.
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
Sonnax remanufactured valve body has been designed with the workhorse vehicle in mind.
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.
Fits Powerglide, 350 and 350C. Also fits Saginaw 3- and 4-Speed, Muncie M20, M21 and M22 with 27-tooth spline. For use with roller bearing tail housing.
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
HEAVY SNOW. SUB-ZERO TEMPS. BLACK ICE. These are a few of old man winter’s favorite tricks…and they can lead to treacherous driving conditions. Working hard to keep roads safe, plow trucks often burn through transmissions, torque converters and driveshaft assemblies, and end up in the shop.
Check out these top-quality repairs and upgrades to get them back on the road and going strong before the next storm hits:
From all of us at Sonnax, thank you for another amazing year! We truly appreciate your support, and look forward to working together again in 2019.
Dec. 24: Closed
Dec. 25: Closed
Dec. 31: Closed
Jan. 1: Closed
Happy holidays and best wishes for the New Year!
We're giving away a $100 Visa gift card and prize pack full of cool Sonnax swag to three lucky fans!
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. 4.
Good luck and Happy Holidays from all your friends at Sonnax!
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
Select your topic(s) of interest and receive only the information that’s important to YOU.
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