Caterpillar 3408B OEM Crankshaft Remachined 25/25 Rods & Mains V8 Cyl Diesel 1W5009, 1W5008 Late style, 9 counterweights * Flange: Centering Ring, 12 Bolt Holes, 1 Dowel Hole * Snout: Centering Ring, 12 Bolt Holes * Stroke: 6.000" * Rod Journal: 3.81889-3.8197" * Main Journal: 4.7479-4.7489" * 5 Mains * With Helical Gear