Detroit Locker 917A738 Truetrac Helical-Gear Limited Slip Differential for Ford F-150 8.8

The Detroit Truetrac 917A738 is a helical-gear limited slip differential designed specifically for 2009-newer Ford F-150 trucks with the 8.8-inch rear axle and 31-spline configuration. This torque-sensing differential automatically transfers power to the wheel with better traction, providing improved performance in diverse driving conditions without the harshness or noise associated with traditional locking differentials.

Key Features:

• Helical gear design provides smooth, automatic operation with no clutches to wear out
• Maintains excellent street manners while delivering superior traction off-road
• 31-spline axle shaft compatibility ensures proper fitment for late-model F-150 applications
• Planetary gear set distributes torque proportionally based on available traction
• Engineered for Ford 8.8-inch ring gear rear differentials
• No external controls or driver intervention required for operation
• Significantly quieter operation compared to automatic lockers

The Truetrac differential is ideal for trucks that see a combination of daily driving and recreational use, providing enhanced traction for towing, off-roading, and adverse weather conditions while maintaining civilized on-road behavior. Unlike open differentials that send power to the wheel with least resistance, the Truetrac ensures both wheels contribute to forward motion.