GY6 50CC 4 Stroke Short Case complete Engine


Replacement 4 Stroke Short Case complete Engine – GY6 50CC

Out of stock


50cc 4-stroke QMB139 complete engine assembly. Short crankcase version.

Engine is set up for PAIR Emissions System. PAIR is an acronym for Pulsed Secondary Air Injection System. It is an emissions control system used to lower HC and CO emissions. It works by allowing air into the exhaust flow.

Please Read The Following Important Notices:

This engine is shipped dry, included oil not installed. Includes 1 Liter of Bel-Ray Gear Saver Hypoid Oil 80W-90 and 1 Liter of Bel-Ray EXL Mineral 4T Engine Oil 10W-40. DO NOT RUN ENGINE WITHOUT ADDING SPECIFIED AMOUNTS OF OIL.

Check oil level after letting the engine idle for a few minutes, add additional oil if needed. (Type of Oils can Vary)

This Engine Only Ships to the Continental U.S.

Additional information

Weight 42 lbs
Dimensions 36 × 20 × 20 in

Output Shaft Length: 54mm
CVT Cover (short case): 16 inches
Set up for drum brake
Set Up for PAIR Emissions System
8 Pole A/C Stator
Includes Premium Bando Drive Belt & NGK Spark Plug
Engine Oil: 0.8 Liters
Gear Oil: 0.12 Liters (filling) and 0.10 Liters (changing
Shipped Dry, Included Oil Not Installed – Do NOT Run Engine Without Adding Specified Amounts of Oil (Bel-Ray Oil Included)

Fit Models:

GY6 50CC 4 Stroke Short Case complete Engine 1P39QMB Kit for Most Gas Scooter
QMB139 50cc/49cc


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