Crankshaft GY6 Engine 50cc – 139QMB | For Chinese Retro Scooters

Original crankshaft with 22-tooth oil pump gear

Is the crankshaft of your scooter worn or defective? With this crankshaft for GY6 50cc engines (139QMB) Drive your scooter smoothly and reliably again. This crankshaft is equipped with a 22-tooth gear for the oil pump on the right side and is supplied with a key.

This crankshaft fits almost all Chinese retro scooters with GY6/139QMB engine (10-inch wheels), including popular Vespa-look models.

Suitable for:

• You were

• AGM VX50 & Retro

• Rover

• Motormania

• Benzhou

• Yiying

• Boatian

• ZNEN

• The mouse

• Grande Retro, Pico, Bella 50

• Killerbee

• Santini

• Peugeot (GY6 variants)

• Kymco (GY6 variants)

• And many other scooters with 139QMB / GY6 block

Characteristics:

• Type: Crankshaft 50cc (GY6 / 139QMB)

• Application: For 4-stroke GY6 engine block (10”)

• Gear: 22 teeth (oil pump drive, right side)

• Includes: Key (for mounting)

• Fit: Original, direct fit

Benefits:

• Strong construction – Reliable and durable

• Original fit – Fits 139QMB / GY6 blocks without modification

• Completely complete – Includes mounting key

• Suitable for many retro scooters – Widely applicable with Chinese Vespa-look models

Note:

Always check whether your current crankshaft is also equipped with a 22-tooth gear for the oil pump Before you order, please check. Newer models often have this version.

📦 Directly available at China Scooter Parts
✅ Suitable for GY6 / 139QMB engines (50cc)
✅ With 22-tooth oil pump drive
✅ Including wedge
✅ Competitive prices & fast delivery

With this GY6 crankshaft 50cc (139QMB) Give your scooter a second life and prevent expensive repairs.