Yukon Zip Locker for Dana 44 with 30 spline axles, 3.73 & down

Product Details 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. Fits Dana Spicer 44 with 30 spline axles 3.73 and down ratio only Forged case and 8620 internals for added strength Works with a variety of air delivery systems Assembled in the USA Technical Notes This unit is drilled for 7/16″ ring gear bolts. If you are using it in an application which has 3/8″ ring gear bolts, please purchase qty 10 of part number YSPBLT-027 to sleeve the ring gear bolts. Includes new carrier bearings.