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22T Crankshaft Assembly for GY6 50cc 60cc 80cc 139QMB
22T Crankshaft Assembly for GY6 50cc 60cc 80cc 139QMB
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Product Overview
Replace a worn or damaged crankshaft with this 22T crankshaft assembly, designed for compatible GY6 139QMB / 139QMA 4-stroke engines.
Suitable for selected 50cc, 60cc, and 80cc scooter, ATV, and quad applications using the matching 22-tooth oil-pump drive gear.
The crankshaft transfers piston movement into rotational power while supporting normal engine operation. For accurate fitment, compare the engine code, oil-pump gear tooth count, and original crankshaft design before ordering.
Product Compatibility
| Engine / Application | Fitment Notes |
|---|---|
| GY6 139QMB | Compatible 22T crankshaft applications |
| GY6 139QMA | Verify original crankshaft configuration |
| 50cc 4-Stroke | Common 139QMB/QMA application |
| 60cc 4-Stroke | Selected GY6 / big-bore applications |
| 80cc 4-Stroke | Selected GY6 / big-bore applications |
| Scooter | Verify 139QMB/QMA engine code |
| ATV / Quad | Compatible GY6-based applications only |
Specifications
| Specification | Details |
| Product Type | Crankshaft Assembly |
| Engine Type | GY6 139QMB / 139QMA |
| Engine Cycle | 4-Stroke |
| Oil Pump Drive Gear | 22 Teeth |
| Compatible Displacement | Selected 50cc / 60cc / 80cc |
| Application | Scooter / ATV / Quad |
| Condition | New |
| Package Quantity | 1 Assembly |
Key Features
- 22T Oil-Pump Drive Gear: Designed for GY6 engines using the 22-tooth crankshaft version.
- 139QMB/QMA Application: Suitable for compatible small-displacement 4-stroke GY6 engines.
- 50cc–80cc Applications: Supports selected standard and big-bore GY6 configurations.
- Crankshaft Replacement: Practical replacement for a worn, damaged, or failed original crankshaft.
- Dimension-Based Fitment: Compare the original crankshaft and gear configuration before installation.
Condividi
Domande frequenti sulla compatibilità
Questa parte è compatibile con il mio modello e anno specifici?
This crankshaft is designed for selected GY6 139QMB / 139QMA 4-stroke engines, including compatible 50cc, 60cc, and 80cc applications.
Vehicle model or displacement alone does not guarantee fitment. Check the engine code and original crankshaft configuration.
Devo corrispondere al numero di parte OEM?
No specific OEM number is provided.
The most important checks are:
GY6 139QMB / 139QMA engine
22-tooth oil-pump drive gear
Original crankshaft shape and dimensions
Bearing and shaft configuration
A quali modelli o situazioni non si adatta questa parte?
This crankshaft is not suitable for:
139QMB/QMA engines requiring a 16T crankshaft
GY6 125cc / 150cc engines
2-stroke engines
Engines with a different crankshaft design
Applications with incompatible bearings, shaft ends, or oil-pump gears
Cosa dovrei controllare prima di ordinare?
Confirm:
Engine code is 139QMB or 139QMA
Engine is 4-stroke
Original crankshaft has a 22T oil-pump drive gear
Crankshaft shape matches the product photos
Bearing locations and shaft ends match
Connecting-rod configuration matches