Caterpillar 638, 3306 DI OEM Crankshaft Remachined 20/20 Rods & Mains 6 Cyl Diesel 5S5870, 8M4502, 1P1390, 2P2842, 4N7696, 9S2270 For Direct Injected (?DI?) engines. For engines with main thrust width on this crank is 1.590? See also part # 5472. * Flange: 9-Bolt * Snout: Tapered, 1-Bolt, 1-Key * Stroke: 6.000" * Rod Journal: Rod ?: 2.9987-3.0003? (76.167-76.208mm) * Main Journal: Main ?: 3.4990-3.5000? (88.875-88.9mm) * 7 Mains * No Gear