The Eaton Detroit Truetrac Differential (Part #912A569) is a precision-engineered helical-gear limited-slip differential designed for Dana 35 axles with 27-spline shafts and 3.54 & up gear ratios. This unit provides a smooth, automatic transfer of torque to the wheel with the most traction—improving stability, handling, and control in all conditions without requiring driver input or maintenance.

Ideal for both on-road performance and off-road capability, the Truetrac’s all-gear, maintenance-free design eliminates clutches and friction plates, offering consistent and quiet operation. Whether tackling trails or enhancing street performance, it delivers dependable traction and long-lasting reliability for Jeep and light 4x4 applications.

Features:

• Helical-gear limited-slip design automatically transfers torque to the wheel with the most grip

• Maintenance-free—no clutches, additives, or wear-prone components

• Smooth, quiet operation with improved handling and cornering

• Durable all-gear construction for long service life

• Optimized for Dana 35 axles with 3.54 & up gear ratios

• Perfect balance of street drivability and off-road strength

Specifications

Fitment:
Compatible with Dana 35 rear axles, available in both C-clip and non C-clip configurations.

• 1984–2009 Jeep: Cherokee, Grand Cherokee, Liberty, Post Office Truck, Scrambler, Wagoneer, Wrangler – Rear Dana 35 C-Clip (3.54 & Up)

• 1985–1989 Jeep: Cherokee, Grand Cherokee, Liberty, Post Office Truck, Scrambler, Wagoneer, Wrangler – Rear Dana 35 Non C-Clip (3.54 & Up)

Ideal Usage:

• Off-Road: Rock Crawl, Light Trail, Sand Sports, Extreme Off-Road, Work Truck / Towing

• On Road: Street & Muscle, Drag Racing, Circle Track, Restoration, Work Truck / Towing

This Part Fits: