The Weasler Tractor Cross and Bearing Kit for NA 12 Series provides increased capacity and extended lubrication intervals with a lube cycle of 50 to 250 hours. This is achieved by providing an improved seal and roller bearings design, which results in a longer life cycle. This tractor cross and bearing kit is interchangeable with other cross and bearing kits in Weasler series as well as standard cross and bearing sets in the market, meaning that a Weasler PTO drive shaft with E-kits can still be upgraded to M-kits. The tractor bearing kit also comes equipped with large roller bearings for added durability in demanding applications.