GY6 50cc (139QMB) Cylinder Gasket

GY6 50cc Cylinder Gasket for 139QMB Engines

This base gasket for the cylinder is built to take the place of the original component on scooters running a 139QMB engine. During engine service, this gasket helps keep things sealed properly. It belongs to the GY6 50cc scooter parts range and can help stop leaks and keep the engine running as it should. It is suited to a number of 50cc and 80cc engines, so it works well for both repairs and swap-outs.

Why the Cylinder Gasket Matters

The cylinder gasket forms a snug seal between the cylinder and the engine block. That seal keeps oil and combustion gases from escaping, which supports good engine performance. Heat and pressure take their toll over time, so a gasket may wear down and need to be replaced to keep the engine in good shape.

Compatibility and Engine Codes

This gasket works with several engine codes, so it covers a range of scooters. If the code on your engine includes "QM" or "FM," this part is a match for your setup.

Specifications

• Diagonal Bolt Hole Spacing: 71mm
• Fits: GY6 50cc 139QMB engine and CSC Bella Classic 50, Go Max, Nitro Sport 50 and Pug 50
• OEM Part Numbers: 139QMA, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD

Fitment

Fits:

• GY6 50cc (139QMB) engine
• CSC Bella Classic 50
• CSC Go Max
• CSC Nitro Sport 50
• CSC Pug 50
• CSC Go (139QMB engine)

How to choose: Compare the engine code stamped on your engine with this list: 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB or 147QMD.

Where it goes: part #7 on the cylinder crankshaft diagram for the GY6 50cc (139QMB), CSC Go; part #7 on the cylinder crankshaft diagram for the CSC Bella Classic 50; part #7 on the cylinder crankshaft diagram for the CSC Go Max.

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