No one knows transmissions & torque converters like


No one knows transmissions & torque converters like 2008-sonnax-logo-white

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Sonnax Wants YOUR New Torque Converter Part Ideas!

Hundreds of new Sonnax converter parts are released each year, many brought to the market thanks to the insight and ideas shared by rebuilders. Unlike your shop, we do not see a constant flow of converters coming through the door. When you cut cores open and examine the components to determine exactly what parts are needed for a quality rebuild, that is valuable information always of interest to Sonnax. It's particularly critical when you're working on late-model units for which aftermarket p

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Get a FREE PASS to Powertrain Expo!

Get FREE admission to the 2015 ATRA Powertrain Expo, compliments of Sonnax! Make sure to visit us at booth #415 to get an up-close look at hot new products, view live demonstrations and talk shop with our team. Click here to get your free show pass today!

Torque Converter Rebuilders: BEWARE!

We've issued a fraudulent parts warning to help protect you from poor quality, imitation parts that can put your shop at risk for time-consuming, expensive comebacks…or worse. Click here for details, and be on the lookout for this illegal activity!


July Edition of Torque Converter Journal Now Available!

The latest edition of the Torque Converter Journal has just been added to the Sonnax website! This valuable newsletter is jam-packed with hot topics including:

  • Defending the Duramax Diesel against Allison 1000 stator weakness
  • Preventing Honda/Acura converter overheating
  • Fraudulent parts warning
  • New parts guide
  • Website tips & tricks

You can now easily download and/or print the full 8-page pdf for your reading pleasure. Click here to check it out now!

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Sonnax Closed on Friday, July 3rd

Sonnax will be closed on Friday, July 3rd, 2015 in observance of Independence Day. Normal business hours will resume the following Monday. Have a happy, safe holiday weekend!

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