John Deere 6081, 8.1L, Early, PowerTech OEM Crankshaft Remachined 25/25 Rods & Mains 6 Cyl Diesel RE534314 Both gears are straight tooth gears. * Flange: Centering Ring, 6 Bolt Holes, 1 Dowel Hole * Snout: Straight Nose, 1 Bolt Hole, 2 Keyways * Stroke: 5.059" * Rod Journal: 2.998-2.999" * Main Journal: 3.748-3.749" * 7 Mains