Crankshaft for GY6 50 60 80 cc Scooter ATV QUAD 4 stroke 139QMB 1P39QMB  22 teeth

Crankshaft OEM quality GY6 (4-stroke) 139QMA / 139QMB with 22 teeth, The crankshaft is pre-pressed and comes with main bearings and connecting rod.GY6 engines are equipped with two different crankshaft versions. In most scooters, the drive gear for the oil pump has 16 teeth (right side). This one is the 22 teeth version, used in newer models like Rex. We recommend to simply count the teeth on the little oil pump gear to avoid mistakes.