QuadraTrac transfer cases Archives - Transmission Digest
Looking at the New QuadraTrac

In 1973 Jeep introduced the QuadraTrac transfer case, designed and built by Borg Warner. Jeep, now part of Chrysler, which is now part of Fiat, trademarked the QuadraTrac name and continues to use it today. In 2011 Jeep introduced several new transfer cases for the Jeep Grand Cherokee models. There are three systems available providing 4-wheel drive: Quadra-Trac I, Quadra-Trac II Active on Demand, and Quadra-Drive II equipped with an Electronic Limited-Slip Differential (ELSD). This gives us three new transfer cases to learn about.