A-171333-AI CROSS REPAIR KIT 6NOne New Aftermarket Replacement Cross and Bearing Kit (U Joint) Series 6N PTO Driveline This Series 6N cross and bearing kit (universal joint repair kit) rebuilds worn or damaged PTO driveline U joints on a wide range of agricultural tractors and implements. The kit fits the domestic 6 Series driveline and is used on PTO shafts for tractors, finishing mowers, round balers, manure spreaders, and other implement applications across many major brands