Eaton Torque Control Products 913A390 Detroit Truetrac Helical Gear Limited Slip Differential

The Eaton Detroit Truetrac 913A390 is a maintenance-free helical gear limited slip differential designed for superior traction and reliability. As the first helical gear differential introduced to the automotive aftermarket, the Truetrac remains the industry-leading solution for on-road and light off-road applications.

Key Features:

• Helical gear design with no clutch plates or friction discs to wear out
• Automatic torque biasing provides smooth, transparent operation
• Works in forward and reverse with equal effectiveness
• No maintenance required - lifetime lubrication with standard gear oil
• Quiet operation with no chatter or noise
• Superior traction in rain, snow, mud, and ice compared to open differentials
• Allows differentiation during cornering for normal driving feel

The Detroit Truetrac uses an innovative helical gear train to transfer torque from the spinning wheel to the wheel with better traction. Unlike clutch-type limited slips that require special additives and periodic maintenance, the Truetrac operates with standard gear oil and requires no service. This proven design delivers consistent performance throughout the life of the differential, making it an ideal traction solution for trucks, SUVs, muscle cars, and daily drivers that need reliable all-weather traction without the harshness of a locker.