Cylinder Base Gasket for Baotian Scooter BT49QT-7

This cylinder base gasket is suitable for Baotian scooters BT49QT-7.

Engine Type: 50cc GY6 139QMA (4-stroke)

Fits engine with a piston of the following dimensions:
- Piston Head external diameter (near the ring): 38.4mm,
- Piston Head external diameter (at the bottom): 39mm,
- Piston Head height: 31.6mm,
- Wrist Pin diameter: 13mm