Recent News

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October Transmission Report Newsletter Just Released!

Dive in to the latest edition of our popular Transmission Report newsletter, which features hot topics including:

  • Remanufactured valve bodies
  • Solenoid strategies webinar
  • 722.9 valve body repairs
  • ZF6HP & 6R80 precision bushings
  • RE5R05A pressure problems
  • What’s new for Powertrain Expo 2015

Read it online now! You can also sign up to receive a hardcopy, or access the complete archive of previous newsletters here.

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NEW! Dodge Diesel High Performance & Heavy Duty Parts Catalog

Check out a powerhouse lineup of Sonnax parts for Dodge Diesel trucks in this brand new catalog featuring:

  • Performance & heavy-duty upgrades for work & extreme sports trucks
  • Critical parts to safeguard transmissions & improve drivability
  • Valve body components for complete overhauls
  • Quality remanufactured valve bodies
  • High-capacity, dampered multi-plate clutch kits to maximize diesel engine performance
  • One-piece aluminum driveshaft components to get power down to the ground

Read it online or

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New Sonnax Website Design Launches October 5!

Exciting news! On Monday, Oct. 5, Sonnax reveals a bold new look and exciting features at A new, expanded menu delivers one-click access to the most popular pages for parts, units, tech resources and more. As always, this is the website built for YOU, so check it out and let us know what you think!


Sonnax Closed on Labor Day

Sonnax will be closed on Monday, Sept. 7th for Labor Day so please make sure to get your orders in soon! Normal business hours will resume on Tuesday, Sept. 8th. Wishing you a wonderful holiday weekend filled with family, friends and fun!


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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