Eaton Detroit Truetrac Differential 35 Spline 1.50in Axle Shaft Diameter 4.10 & Down Ratio Dana 60HD

The Detroit Truetrac differential uses a helical-gear design to automatically bias torque to the wheel with more grip. This means you get improved traction for acceleration and handling without any sudden engagement or noise. It operates smoothly in both forward and reverse, making it a versatile choice for a wide range of vehicles, including many Dodge Ram 2500 trucks and Chevrolet Astro vans. Because it uses gears instead of clutch packs, it requires no special lubrication or friction modifiers, and it’s built for durable, quiet operation.

This particular Truetrac is set up for Dana 60HD axles, featuring 35 spline count and a 1.50-inch axle shaft diameter. It’s designed to work with ring and pinion gear sets with ratios of 4.10 and numerically lower (like 4.56, 4.88, etc.). The helical gear system is maintenance-free and engages automatically, so you don't have to do anything special when traction conditions change. This makes it a popular upgrade for drivers looking for better performance and control in varied conditions, whether on-road or off-road.

When installing this differential, ensure you have the correct tools and follow the manufacturer's recommended procedures for setting gear backlash and preload. Because it's a limited-slip unit, it works seamlessly with your existing drivetrain components, providing a noticeable improvement in how your vehicle puts power down.