Universal Parts QMB139 Crankshaft, Type-2

Universal Parts Crankshaft Assembly, Type-2 for 50cc 4-stroke QMB139 engines. Has 22 tooth oil pump drive gear. Stroke: 41.4mm Overall Length: 254mm Thread Size (tapered side): M10x1.25 Thread Size (spline side): M12x1.25 Bearing Outer Diameter (tapered side): 42mm Bearing Outer Diameter (spline side): 47mm Number of Splines: 26 Number of Teeth (oil pump drive gear): 22