Eaton Truetrac Differential, For AMC Model 20 Rear Ends with 3.08 or Higher Gears, (FREE lower 48 ground shipping in approx. 1-2 weeks)

Take your limited-slip differential technology into the 21st century with a Detroit Truetrac.  Detroit Truetrac's proven helical gear design eliminates the need for wearable parts, resulting in maintenance-free traction recognized not only for its toughness but its smooth and quiet operation as well.

The Truetrac performs like an open differential under normal conditions and automatically transfers torque to the wheel with the highest traction when required. The Truetrac can transfer up to 3.5 times more torque to the high traction wheel. This torque transfer ratio (called the bias ratio) is accomplished by using helical side gears and pinions. The bias ratio is the result of pressure exerted by the side gears and pinions against the surface of the differential case. In certain applications, this normal gear engagement may produce temporary driver feedback.

• Replace your worn-out, broken, or damaged limited-slip differential
• Get the traction of a locking differential with the quiet operation of a limited-slip differential
• Bolt-in with no modifications required and works with all Model 20 AMC carriers with 3.08 or higher numerical gears