Cummins 6B OEM Crankshaft Remachined ST/ST Rods & Mains 6 Cyl Diesel 3908032, 3929037, 3907804, 3915259, 3903828, 3905619, 3907604 Cummins Consolidated Die-sel engine. For Case IH applications, Not for applications with bolt-on sensor. * Flange: Flat, 8 Bolt Holes * Snout: 4 Bolt Holes, 1 Keyway * Stroke: 4.724" * Rod Journal: 2.7160-2.7170" * Main Journal: 3.2672-3.2682" * 7 Mains * With Helical Gear