John Deere 4.202, 4.219, 4.239 Early OEM Crankshaft Remachined ST/ST Rods & Mains 4 Cyl Diesel AT18030, R23517, R81959, R94644, RE48748 36mm (1.42?) snout. 4.239 ESN up to 769619. * Flange: 4 Bolt Holes, 1 Dowel Hole * Snout: Straight, 1 Bolt Hole, 1 Keyway * Stroke: 4.330" * Rod Journal: 2.7480-2.7490" * Main Journal: 3.1235-3.1245" * 5 Mains * With Helical Gear