Eaton Detroit Truetrac Differential, 30-Spline, Rear Dana 60, 4.10 and Down Ratio, Part EAT913A389

The Detroit Truetrac is a helical-gear style, limited-slip differential that maximizes wheel traction and enhances driving characteristics. Maintenance-free, it features smooth, automatic operation in forward and reverse. Its versatility makes Detroit Truetrac the ideal traction solution for almost any type of vehicle. Detroit Truetrac® Differential; 30 Spline; 1.31 in. Axle Shaft Diameter; 4.10 And Down Ring Gear Pinion Ratio; Rear Dana 60;

• Optimized Torque Bias Ratios Deliver Max Acceleration And Handling
• No Special Lubrication Or Friction Modifiers Needed
• Helical Gear Limited Slip Differential
• Durable; Smooth; Quiet Operation
• Works In Forward And Reverse
• Ideal For Most Vehicles
• Automatic Engagement

The Eaton Detroit Truetrac Differential is a helical-gear limited-slip differential designed to improve traction, acceleration, and handling in vehicles equipped with a rear Dana 60 axle. Part EAT913A389 features a 30-spline configuration and supports ring gear and pinion ratios of 4.10 and down. Its automatic torque-biasing operation helps transfer power to the wheel with greater traction without requiring driver input.

Built for smooth, quiet, and durable performance, the Detroit Truetrac operates automatically in both forward and reverse. The helical-gear design provides consistent engagement without clutch packs, making this differential maintenance-free under normal operating conditions. No special lubricant or friction modifiers are required, helping simplify installation and ongoing service.

• Application: Rear Dana 60 axle assemblies
• Gear Style: Helical-gear limited-slip differential
• Spline Count: 30-spline axle configuration
• Axle Shaft Diameter: 1.31 inches
• Supported Ratio: 4.10 and down ring gear and pinion ratio
• Engagement: Automatic torque-biasing operation
• Operating Direction: Functions in forward and reverse
• Lubrication: No special lubricant or friction modifier required

The Eaton Detroit Truetrac is a versatile traction solution for street-driven, work, and performance vehicles that use the specified rear Dana 60 application. Optimized torque-bias ratios help deliver dependable power distribution during acceleration while maintaining predictable driving characteristics. Confirm axle configuration, spline count, shaft specification, and gear ratio before installation.

What's Included: One Eaton Detroit Truetrac helical-gear limited-slip differential. Installation hardware, bearings, seals, and lubricant are not specified and may be required separately.

Features:

• Optimized torque-bias ratios help improve acceleration and handling
• Maintenance-free helical-gear limited-slip design
• No special lubrication or friction modifiers required
• Smooth, quiet, and durable operation
• Automatic engagement without driver input
• Operates in both forward and reverse
• Designed for rear Dana 60 applications
• Ideal for a wide range of street, work, and performance vehicles

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1