GY6 50cc (139QMB) Cylinder Gaskets (Replacement, 47mm)

Replacement Cylinder Gaskets for GY6 50cc Engines

This kit contains cylinder gaskets made for 139QMB engines fitted with a 47mm big bore kit. They help you restore compression or raise engine displacement for better performance. As part of GY6 50cc scooter parts, they provide the seal needed for smooth, efficient running.

What This Part Does

Cylinder gaskets help keep the engine sealed as it runs. They sit between the cylinder and neighboring engine components to stop leaks and maintain proper compression. Swapping out worn or damaged gaskets is important when you install a big bore kit or when you're working to bring back lost engine performance.

Specifications

• Size: 47mm
• Fits: GY6 50cc 139QMB engine with 47mm big bore kit
• Position: Cylinder

Fitment

Fits:

• GY6 50cc 139QMB engine (47mm big bore kit, NCY kit #1100-1247)

How to choose: Confirm the bore matches your cylinder. This gasket is sized for a 47mm big bore kit.

Shop more: GY6 50cc Scooter Parts (139QMB) · GY6 Scooter Parts · Scooter Big Bore & Cylinder Kits · Scooter Gaskets & Seals · Scooter Parts