Modern Drive Shaft Pinion Bearing Kit, with closed spool (also call the Closed Drive Shaft Bearing Housing). It is called a closed housing because the mounting studs are enclosed in the housing. This kit replaces part #2853U, 2587,2589B,and 2596. Installs in minutes - no machining required. No lost "show points" - invisible after installation! Uses a sealed upper bearing and tapered lower roller bearing. Eliminates all drive shaft end play, allowing you to use roller bearing part #2581RB without need for precision U-joint end play setting. Instructions included.