Guangzhou Excavator Parts 08C127 Crankshaft, 3066 for В Excavator, 1253005 Stroke - 5.118" Bore - 4.0161" - 4.0175" Rod - 2.360" - 2.3608" Main - 3.541" - 3.542" Flange - No Centering Ring, Flat, 6 Bolt Holes, 2 Dowel Holes Snout - Straight, Threaded, 2 Keyways made to