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.