Allis Chalmers 426, D3400, D3500, D3700, D3750, 670T OEM Crankshaft Remachined ST/ST Rods & Mains 6 Cyl Diesel 4025042, 4027134, 4028608, 4025479, 4035953, 4028603, 4036404, 4037168, 4036264, 4037190, 39CR5 Standard Duty | Stroke: 5.000 in | Rod Journal: 2.748 in | Main Journal: 3.248 in | 7 Mains | With Helical Gear With Helical Gear