The 10132530 Dana differential case assembly is a Trac-Lok differential carrier listed for the Dana 44 AdvanTEK rear axle, JL application. This case is the housing at the heart of the axle’s differential. The ring gear bolts onto it and the spider gears turn within it, which is how drive gets from the driveline out to the wheels. Inside the case, the gears let the outside wheel turn faster than the inside wheel in a turn while both wheels are driven evenly when going straight. A genuine Dana part from Pro Gear and Transmission. Call us with your axle details to confirm proper fit.FeaturesGenuine Dana differential case assembly, part number 10132530Trac-Lok differential carrierListed for the Dana 44 AdvanTEK rear axle, JL applicationHousing that carries the ring gear and the differential gears