Eaton Detroit Truetrac Differential, 27-Spline, Dana 30, 3.73 and Up Ratio, Part Number 912A585

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; 27 Spline; 1.16 in. Axle Shaft Diameter; 3.73 And Up Ring Gear Pinion Ratio; Rear; Dana 30/Reverse; Applies To Non-Disconnect Only;

• 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 characteristics. Built for Dana 30 applications with 27-spline axle shafts and a 3.73-and-up ring gear and pinion ratio, this unit provides smooth, automatic torque transfer without driver intervention.

Part Number 912A585 features maintenance-free operation and does not require special lubrication or friction modifiers. Its helical-gear design delivers durable, quiet performance in both forward and reverse, making it a practical traction upgrade for a wide range of vehicles. This differential applies to non-disconnect Dana 30 configurations and is intended for front axle use where compatible.

What's Included: One Eaton Detroit Truetrac limited-slip differential. Verify axle configuration, spline count, shaft diameter, gear ratio, and non-disconnect fitment before ordering. Vehicle-specific fitment data should be confirmed using the applicable axle and drivetrain specifications.

Features:

• Torque Biasing Performance: Optimized torque bias ratios help improve acceleration, traction, and handling.
• Maintenance-Free Design: Operates without special lubrication or friction modifiers.
• Helical-Gear Limited Slip: Automatically redirects torque to the wheel with available traction.
• Smooth and Quiet Operation: Delivers durable performance in forward and reverse without manual engagement.

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