Universal Parts QMB139 Crankshaft, Type-1
Universal Parts Crankshaft Assembly, Type-1 for 50cc 4-stroke QMB139 engines. Has 16 tooth oil pump drive gear.- Stroke: 41.4mm
- Overall Length: 247mm
- 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): 16
QMB139 50cc/49cc , Various unlisted makes/models