Every year, Transmission Digest accepts nominations for the top products and tools in the powertrain aftermarket. Readers vote for their favorites to determine the winners.

The results are in: we won 9 top product awards! Thank you all for your trust and support of Sonnax and Rostra products – we couldn’t have done it without you.

Take a look at the winning products here:

• Chrysler 42/44/46/47/48RE (’00–Later) Rostra Governor Pressure Sensor  
• Chrysler 68RFE Bushing Kit  
• Ford 6R60/75/80 & ZFHP26 Heavy Duty Overdrive "E" Piston  
• GM 4L60/E Series Heavy Duty Input Shafts  
• GM 4L60/E Series Input Housing Forward Sleeve Kit  
• GM 6L45/50 & 6L80/90 Bushing Kits  
• GM 6L80/90 Remanufactured TEHCMs  
• GM 6L80/90 The Sure Cure® Kit  
• ZF8HP55/70/75 Heavy Duty "D" Clutch Backing Plate

     

Sonnax Transmission Company is excited to announce the addition of 13 solenoids and modules to the Rostra Powertrain Controls product group beginning this October. The company has secured these SKUs in an agreement to succeed BorgWarner as the distributor for their OE solenoid supplier, Solero Technologies.

This distribution program represents an important opportunity to support the Sonnax mission: to be the leader in bringing innovative, high-quality drivetrain components to the automotive aftermarket. 

Look for this icon at www.rostrapowertrain.com to identify authentic OEM/S parts supplied by Rostra and contact your distributor today!

 

Every year, Transmission Digest accepts nominations for the top products and tools in the powertrain aftermarket. Readers vote for their favorites to determine the winners. The results are in: we won 13 top product awards! Thank you all for your trust and support of Sonnax and Rostra products – we couldn’t have done it without you.

Take a look at the winning products here:

• Chrysler 845RE, ZF8HP45/55/70 Solenoid Test Manifold Kit  
• GM 4L60-E, 4L65-E ('96–'08) Heavy Duty Remanufactured Valve Bodies  
• GM 4L80-E ('95-Earlier), TH400 Adjustable Rear Servo Pin Kit  
• GM 4L80-E ('95-Earlier), TH400 Heavy Duty Low/Reverse Servo Piston  
• GM 6L80 Extreme Duty 4-5-6 Clutch Hub & Intermediate Shaft  
• GM 6L80, 6L90 Bearing Kit  
• GM 6L80, 6L90 Output Planetary Lube Dam  
• GM 8L45, 8L90 Zip Kits  
• GM TH400 Heavy Duty Forward Drum  
• GM TH400 Smart-Tech® Drum Module  
• ZF8HP55/70/75 Heavy Duty "A" Clutch Backing Plate  
• ZF8HP70 Heavy Duty "E" Clutch Hub  
• Ford 6R80, 6R100, 6R140 Variable Bleed Solenoids

 

The automotive aftermarket has long been familiar with Torrington bearings. Although most people know that Torrington is a company that manufactures these bearings, the term “Torrington bearing” has become synonymous with needle roller thrust bearings. “Torrington bearing” has become a generic term describing a type of bearing as much as it indicates a manufacturer who produces those bearings.

The Torrington Company was established in 1898 in Torrington, Conn. It was an independent company until an acquisition by Ingersoll Rand Corp. in 1968. In 2003, Torrington Bearing was sold to the Timken Company, which produced Torrington brand bearings until 2009. In 2009, JTEKT Corporation of Japan acquired the Torrington bearing line – including the manufacturing plants and tech center along with 3,400 employees – from Timken. Torrington became part of the JTEKT’s Koyo Bearings.

Since 2013, these products formerly known as Torrington bearings were marketed solely under the Koyo brand name.

In April and November 2022, JTEKT North America provided notification regarding the unification of the Koyo bearing brand to the JTEKT brand. Be aware there is no change in ownership associated with the name change. This change is simply a consolidation of the Koyo bearing brand to the globally recognized JTEKT brand.

JTEKT Bearings — changing its name from Koyo Bearings — is the Torrington Legacy, and you can count on Sonnax providing you with the same great OE quality you've always received under the Torrington brand... only the name has now changed to JTEKT.

Every year, Transmission Digest accepts nominations for the top 10 products and tools in the powertrain aftermarket. Readers vote for their favorites to determine the winners. The results are in: we won six top product awards! Thank you all for your trust and support of Sonnax products – we couldn’t have done it without you.

Take a look at the winning products here:

• Chrysler 45/545/65/66/68RFE Lube Regulated Pressure Regulator Valve  
• Chrysler 62TE Shift Shaft Saver Kit  
• Chrysler 68RFE Smart-Tech® Overdrive Clutch Housing Kit  
• Ford 6F35 (Gen. 1 & 2) Case Saver Kit  
• GM 4L80/85-E Heavy Duty Input Shaft  
• GM 4L80/85-E Performance Pack

 

Enter to win one of three $100 Visa gift cards plus a cool Sonnax swag bag! 

Here's how to enter: You can either enter on Facebook, or you can send an email to [email protected] telling us one reason why you're a Sonnax fan. It’s that easy!

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. 7.

Good luck and Happy Holidays from all your friends at Sonnax! 

Official Rules: No purchase necessary. Open to U.S. residents aged 18 and older. One entry per person. Except where prohibited, participation in the Sonnax giveaway constitutes winner's consent to Sonnax use of winner's name and comment for promotional purposes in any media, worldwide.

Sonnax Transmission Company is excited to announce a recent reorganization, integrating Rostra Powertrain Controls into the company’s Vermont- and North Carolina-based Sonnax operations. This concludes several years of internal moves aligning teams and resources to better serve the transmission aftermarket. Both the Sonnax and Rostra brands have been part of Marmon Holdings, Inc. since 2018, with Steve Boyer leading both teams as President since 2020.

“Through this integration, Rostra and Sonnax will become a single, transmission-focused organization,” said Boyer. “This new structure will synchronize our product development efforts, reduce time to market of new products and allow us to make improvements in quality and delivery to our shared customers.”

Boyer said several internal promotions were made to support the alignment of both brands under Sonnax Transmission Company:

Maura Stafford is appointed company Vice President of Transmission Products. Stafford and her team manage product groups focused on hydraulic and electronic transmission components, solenoids and remanufactured valve bodies.

Steve Jaussaud continues as company Vice President of Product Line Management, guiding development of torque converter, high performance, driveline and mechanical transmission components. Jaussaud also manages the torque converter product line, a responsibility he assumed in late 2020.

Beth Houder is appointed company Vice President of Marketing & Communications, leading marketing efforts and the continued development of both brands in the aftermarket industry.

Mark Kaplan serves as company Vice President of Sales, assuming sales management for Sonnax and Rostra. He is joined by Seth Baldasaro, Director of Strategic Accounts, and Tony Diorio, National Accounts Manager.