Latest News

April 04, 2018

Sonnax Joins Marmon Via Asset Sale

Sonnax Industries, Inc. is pleased to announce the sale of its assets to a newly-created subsidiary of Marmon Holdings, Inc., a Berkshire Hathaway company. The new company will operate as Sonnax Transmission Company. Terms of the acquisition were not disclosed.

As an employee-owned company, the sale was overwhelmingly approved by vote of Sonnax employees. Steve Boyer becomes President of Sonnax Transmission, and will work closely with Sonnax Industries CEO Tommy Harmon to ensure a smooth transition into Marmon.

“Joining Marmon affords Sonnax employees the support and stability of a very successful global organization while maintaining its homegrown, entrepreneurial feel,” Harmon said. “Above all, this expands what we can deliver to our customers, so our future is bright.”

Marmon Holdings comprises about 175 independent manufacturing and service businesses with facilities in 23 countries and total revenues exceeding $7.7 billion in 2017. Marmon is a subsidiary of Berkshire Hathaway, one of the world’s largest, most successful, and most highly respected companies.

Sonnax Transmission joins Marmon’s Automotive Aftermarket group, whose businesses are well known for providing innovative, engineered solutions for aftermarket installers.

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March 28, 2018

Important Notice Affecting Normal Business Hours

Upcoming events require changes to our normal business hours:

  • Friday, March 30: 
    Due to the end of the fiscal year, the warehouse will be closed to shipping after 1 p.m., but our sales team will still be available to quote and provide information on product availability to you.
  • Monday, April 2: 
    Sonnax will be closed from 8:30 a.m. until noon for a company-wide event. Normal business hours will resume after that.

We apologize for any inconvenience this may cause. Please contact your Sonnax sales representative with any questions, or to place orders in advance. As always, we strive to provide the best service and support on order fulfillment, and we truly appreciate your business.

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March 22, 2018

Enter to Win a New Sonnax T-shirt!

Submit your photos for a chance to win a Sonnax performance T-shirt and be featured on our Facebook page! A new winner will be chosen every Friday.

Click here for details and enter now.


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May 05, 2018, 8:00AM - 4:00PM

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August 18, 2018, 8:00AM - 4:00PM

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October 30, 2018, 9:00AM - 4:00PM

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Sonnax’s mission is to be the leading supplier of innovative drivetrain components to the automotive aftermarket by developing quality solutions that serve customer needs.