The whole unit with everything it including the cover cap and seal- already greased was less than $80 new. I went ahead a bought a seal kit, cleaned up the bad unit and regreased it, put back in the new package that the new hub came in to keep in my truck for a spare in case of an emergency. As far as I could see, there are only two units for the vortex hubs set up as described here. There are two types of the vortex hubs- one is a straigt spindle setup the other fits a tapered spindle (wheel spendle is larger on the back and smaller on the front side. I bought a whole new vortex asssembly and just installed it myself. the Vortex screw on cover cap had a hairline crack on it and was letter water seep into the hub causing the rear seal to go bad throwing off grease.
I had to replace one of my Vortex hub assembly's on my tandem trailer.
