Eaton Detroit Truetrac Differential EAT912A317, 28-Spline Rear Differential for 7.5-Inch and 7.625-Inch Axles

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; 28 Spline; 1.20 in. Axle Shaft Diameter; 3.23 And Up Ring Gear Pinion Ratio; Rear; 7.5 in./7.625 in.;

• 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 EAT912A317 is a helical-gear limited-slip differential designed to improve traction, acceleration, and handling in rear-wheel-drive applications. Engineered for 7.5-inch and 7.625-inch rear axle assemblies with 28-spline axle shafts and a 3.23-and-up ring gear-to-pinion ratio, this Detroit Truetrac differential automatically distributes torque to the wheel with the most available traction.

Unlike clutch-style limited-slip differentials, the Detroit Truetrac uses helical gears for smooth, quiet, and maintenance-free operation. It requires no special lubricant or friction modifiers, helping simplify installation and service. Automatic engagement provides consistent traction in forward and reverse without driver input, making the Eaton Detroit Truetrac EAT912A317 a dependable upgrade for street-driven vehicles, performance applications, and a wide range of traction-focused builds.

• Optimized torque bias ratios help deliver stronger acceleration and improved handling.
• Helical-gear limited-slip design provides smooth, quiet, and durable operation.
• Automatic engagement works in both forward and reverse without manual controls.
• Maintenance-free operation requires no special lubrication or friction modifiers.

Product Specifications and Technical Data

• Brand: Eaton
• Product Line: Detroit Truetrac
• Part Number: EAT912A317
• Differential Type: Helical-gear limited-slip differential
• Axle Position: Rear
• Axle Compatibility: 7.5-inch and 7.625-inch axle assemblies
• Axle Shaft Spline Count: 28 spline
• Ring Gear and Pinion Ratio: 3.23 and higher

What's Included

One Eaton Detroit Truetrac limited-slip differential for the specified rear axle application. Installation hardware, bearings, seals, and lubricant are not included unless specifically supplied by the vehicle or axle manufacturer.

Verify axle assembly, spline count, ring gear and pinion ratio, and application requirements before ordering. Vehicle-specific fitment data should be confirmed using the axle and drivetrain specifications.

Features:

• Optimized torque bias ratios deliver improved acceleration and handling.
• Helical-gear limited-slip design provides smooth, quiet, and durable operation.
• No special lubrication or friction modifiers are required.
• Automatic engagement works in forward and reverse.
• Maintenance-free design simplifies long-term service.
• Compatible with rear 7.5-inch and 7.625-inch axle applications.
• Designed for 28-spline axle shafts with a 3.23-and-up ratio.
• Provides a versatile traction solution for many vehicle applications.

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