The Eaton Detroit Truetrac 915A568 is a helical gear-driven limited-slip differential for the AAM 11.5 inch axle with 30-spline axle shafts. It maximizes traction and improves drivability automatically with no maintenance, which makes it a strong, quiet upgrade for heavy-duty tow and work trucks.
- Type: Helical limited-slip differential (Detroit Truetrac)
- Axle: AAM 11.5 in
- Ring gear diameter: 11.5 in
- Axle shaft diameter: 1.55 in
- Spline count: 30
- Gear ratio: fits all ratios
- Fits: AAM 11.5in rear axle (GM and Ram 2500/3500)
- Part number: 915A568
Vehicle Applications
- 2001-2019 Chevrolet Silverado 2500HD / 3500
- 2001-2019 GMC Sierra 2500HD / 3500
- 2003-2018 Ram 2500 / 3500 (AAM 11.5in)
FAQ
What axle does the 915A568 fit?
The AAM 11.5 inch axle with 30-spline shafts, used on GM and Ram 2500/3500 heavy-duty trucks.
Does it need a specific ratio?
No. The Detroit Truetrac fits all ratios for this axle.
Is it automatic?
Yes. It is a fully automatic, maintenance-free limited-slip with no switch.
How do I confirm fitment?
Confirm you have the AAM 11.5in axle with 30-spline shafts before ordering.

