Eaton Torque Control Products 913A389 Detroit Truetrac Helical Gear Limited Slip Differential

The Eaton Detroit Truetrac 913A389 is a premium helical gear-type limited slip differential designed to deliver reliable traction without the maintenance requirements of traditional clutch-type differentials. As the first helical gear differential introduced to the automotive aftermarket under the Eaton brand, the Truetrac has established itself as the industry-leading solution for improved traction and drivability.

Key Features:

• Helical gear design provides smooth, automatic torque biasing without clutches or preload springs
• Maintenance-free operation with no wearable friction plates or periodic fluid changes required
• Quiet operation compared to traditional locking differentials
• Instant traction response that transfers torque to the wheel with better grip
• Works seamlessly in all driving conditions, both on and off-road
• Compatible with traction control and ABS systems
• Proven durability for street, truck, and performance applications

The Detroit Truetrac utilizes inverted tooth gears that separate under load, creating a resistance force that biases torque to the wheel with traction. This automatic operation provides superior performance in rain, snow, mud, and ice without driver intervention. The Truetrac maintains full differential action during cornering while maximizing forward traction when needed, making it an ideal upgrade for trucks, SUVs, and performance vehicles that demand reliable traction without compromising daily drivability.