Eaton Detroit Truetrac Differential 30 Spline 1.30in 3.73 & Up Ratio for Select GM 1964-1982 (913A315)

Fits select 1964-1982 Chevrolet and GMC C10, K10, Blazer, Jimmy, Suburban, and G-Series vans.

The Eaton Detroit Truetrac is the industry-leading helical-gear style limited-slip differential, engineered to maximize wheel traction and improve handling in your GM half-ton truck. Unlike traditional clutch-style LSDs, the Truetrac uses a maintenance-free gear design that eliminates the need for friction modifiers or special additives. It operates as a standard open differential under normal conditions, but automatically engages to transfer torque to the high-traction wheel when wheel slip occurs.

Built for durability and quiet performance, this unit provides smooth operation in both forward and reverse. It is an ideal traction solution for street, work, or off-road use, where consistent power delivery is required without the harshness of a mechanical locker.

• Manufacturer Part Number: 913A315
• Axle Shaft Diameter: 1.30in
• Spline Count: 30
• Compatible Gear Ratios: 3.73 and Up
• Differential Type: Helical Gear Limited Slip
• Maintenance-free design; no clutches to wear out
• Requires no friction modifiers
• Automatic engagement for seamless traction