Eaton

Eaton Detroit Truetrac Differential 29 Spline 1.27in Axle Shaft Diameter 3.08 & Up Ratio Rear AMC 20 - 912A579

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SKU:
EAT912A579
MPN:
912A579
Availability:
Regularly stocked product
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MSRP: $960.86
$883.99
— You save $76.87
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Description

What is a Truetrac differential?
A Truetrac differential is a helical gear-style limited-slip unit that automatically biases torque to the wheel with the most traction, ensuring smooth operation in forward and reverse.

Is the Truetrac a clutch-based differential?
No, the Truetrac differential is a gear-based, clutchless design, offering smooth automatic operation without wear-prone friction components.

Eaton Detroit Truetrac Differentials deliver optimized torque bias ratios for superior traction and control, especially for weekend off-roading with a score of 9. Its helical-gear style automatic operation provides seamless grip on any surface. Experience confident, predictable power delivery for an exhilarating drive, guaranteed.

What Owners Say

Owners and enthusiasts consistently praise the Eaton Detroit Truetrac for delivering smooth, quiet operation that eliminates the tire squealing and popping common with traditional lockers. Many highlight how it engages seamlessly without startling passengers, making it significantly more civilized for daily driving and towing compared to selectable or lunchbox-style lockers. The helical gear design earns recognition for its maintenance-free durability and quality construction. The honest trade-off is that it doesn't perform quite as aggressively as full lockers in extreme off-road situations, but for drivers who want reliable traction without compromising street manners, the Truetrac has earned a strong reputation as the best all-around differential upgrade available.

Key Features

  • helical-gear style
  • limited-slip differential
  • smooth automatic operation
  • works in forward and reverse
  • optimized torque bias ratios
  • helical gear limited slip differential

Why Choose the EAT Detroit Truetrac Diffs

Delivers seamless traction on any surface, automatically adapting to changing conditions.

Achieves confident grip in forward and reverse, enhancing maneuverability off-road.

Provides smooth, predictable power delivery for a more controlled and exhilarating drive.

Transforms your vehicle's handling, maximizing power to the wheels when you need it.

Who Is This For?

Weekend Off-Roading — 9/10
Helical gears provide smooth automatic traction.

Overlanding / Expedition — 8/10
Optimized torque bias for consistent traction.

Street Performance — 7/10
Smooth operation enhances control and traction.

Serious Rock Crawling — 7/10
Limited-slip function aids in challenging terrain.

Drag Racing — 5/10
Optimized torque bias may improve launch.

Track / Autocross — 5/10
Smooth operation may offer predictable handling.

Frequently Asked Questions

Will the Eaton Detroit Truetrac fit my 1985 Jeep CJ7?

Confirming fitment, the Eaton Detroit Truetrac is designed as a drop-in replacement for your 1985 Jeep CJ7. This differential directly accommodates your vehicle's specific axle configuration. Install this upgrade with confidence for enhanced drivetrain performance.

How difficult is it to install a Detroit Truetrac differential?

Installation of the Eaton Detroit Truetrac is a straightforward drop-in process. Its design allows for direct integration into the existing axle housing without complex modifications. Enjoy enhanced traction with a relatively simple upgrade procedure.

What kind of performance improvement can I expect from a Truetrac differential for weekend off-roading?

Experience superior traction for weekend off-roading, scoring a 9 out of 10 in this usage case. The helical gear design provides seamless automatic power distribution to the wheels. This upgrade transforms your vehicle's capability on challenging trails.

What is the maintenance required for an Eaton Detroit Truetrac?

The Eaton Detroit Truetrac requires moderate maintenance, typically involving regular gear oil changes as per manufacturer recommendations. This ensures the longevity and consistent performance of its advanced helical gear system. Proper upkeep guarantees optimal operation for years to come.

Additional Resources

Official Eaton Product Page

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Additional Information

Clearance Item:
N
MPN:
912A579
Proposition 65:
N
Case Lot Quantity:
1
Category:
Drivetrain>Differentials
Install Type:
Drop-In
Product Level:
Premium Performance
Weekend Off-Roading:
9/10
Overlanding / Expedition:
8/10
Street Performance:
7/10
Serious Rock Crawling:
7/10
Drag Racing:
5/10
Track / Autocross:
5/10
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