Detroit Locker 912A569 Truetrac Limited Slip Differential Dana 35 27-Spline

The Detroit Locker 912A569 Truetrac is a helical gear-type limited slip differential designed specifically for Dana 35 axles with 27-spline axle shafts. This proven differential uses a patented design of parallel-axis planetary helical gears to provide smooth, automatic torque splitting without the maintenance requirements of traditional clutch-type limited slip units.

Key Features:

• Helical gear design eliminates friction plates, cones, and springs for maintenance-free operation
• Performs like an open differential under normal driving conditions with seamless power transfer
• Automatically transfers torque to the wheel with better traction when needed
• Compatible with 3.54 and numerically higher gear ratios only
• 27-spline axle shaft configuration with 1.18-inch axle shaft diameter
• Fits Dana 35 axles with 7.56-inch diameter ring gear and 10 cover bolts
• Steel construction for durability

The Truetrac delivers power transfer so smooth it goes unnoticed during daily driving, yet provides enhanced traction in mud, snow, ice, and off-road conditions. Eaton recommends using petroleum/mineral-based GL-5 80W-90 gear oil—do not use synthetic gear oil or friction modifiers with this differential.