What makes the Detroit Truetrac different from other limited-slip differentials?

The Detroit Truetrac uses a unique helical-gear design instead of clutches. This means it operates smoothly and automatically without needing special friction modifiers or lubricants, and it's maintenance-free.

What specific axle and spline count does this differential require?

This differential is for full-float rear axles with a 10.25-inch or 10.5-inch ring gear. It requires 35-spline axle shafts that are 1.50 inches in diameter.

Does this differential come with all the necessary installation hardware?

This listing is for the Detroit Truetrac differential unit itself. Installation typically requires additional components such as bearings, seals, and potentially a ring gear bolt kit, which are sold separately.

Eaton Detroit Truetrac Differential 915A550 - 35 Spline

Name: Eaton Detroit Truetrac Diff 35 Spline 1.50in Axle Shaft Dia Rear 10.25in/10.5in (Full Float Only)
Brand: Eaton
Price: 937.38 USD
Availability: InStock

Eaton Detroit Truetrac Diff 35 Spline 1.50in Axle Shaft Dia Rear 10.25in/10.5in (Full Float Only)

$937.38

Only 7 left in stock

Eaton Detroit Truetrac limited-slip differential. Maximizes traction with smooth, automatic operation for a wide range of vehicles.

Key Features

Fits full-float rear axle assemblies with 10.25-inch or 10.5-inch ring gears.
Features 35-spline axle compatibility and a 1.50-inch axle shaft diameter.
Helical-gear limited-slip differential design maximizes wheel traction.
Provides smooth, quiet, and automatic operation in both forward and reverse.
Maintenance-free operation requires no special lubrication or friction modifiers.
Optimized torque bias ratios enhance acceleration and handling.

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Will this fit your vehicle?

Product Details

This Detroit Truetrac differential is a helical-gear style, limited-slip unit designed to maximize wheel traction and improve your vehicle's driving characteristics. You get the differential itself, ready for installation into a full-float rear axle assembly with a 10.25-inch or 10.5-inch ring gear. It's built for 35-spline axle shafts with a 1.50-inch diameter.

What makes the Truetrac stand out is its smooth, automatic operation. Unlike some other traction systems, it doesn't rely on clutches or friction modifiers, meaning it requires no special lubrication and is maintenance-free. It engages automatically in both forward and reverse, providing consistent torque bias to the wheel with the most grip. This makes it an ideal traction solution for a wide variety of vehicles, from work trucks like the Ford E-350 Super Duty to SUVs like the Ford Bronco and even smaller vehicles like the Ford Escape. Its helical gear design ensures quiet and durable operation, so you get improved acceleration and handling without added noise.

This unit is designed to fit a broad range of full-float rear axles. While it's a significant upgrade for traction, remember to consult your vehicle's service manual or a qualified mechanic for specific installation procedures and any other components you might need for a complete rear axle overhaul.