Yukon Zip Locker for Model 35 with 30 spline axles, 3.54 & up

* Fits AMC Model 35 with 30 spline axles * 3.54 and up ratio only * Forged case and 8620 internals for added strength * Works with a variety of air delivery systems * Assembled in the USA The Yukon Zip Locker is the latest in on-demand traction. Its air-operated design allows you to switch from an open differential to 100% lockup when you need it, giving you the ultimate in driver selectability.