Scooter 50cc 4-stroke QMB139 complete engine assembly| Short crankcase 

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 1 Liter of Bel-Ray Engine Oil. 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.

• Set Up For Drum Brakes

• This Engine Only Ships to the Continental U.S.

50cc 4-stroke QMB139 complete engine assembly| Long 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. 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.
• Set Up For Drum Brakes

Gearbox Cover for 50cc 4-stroke QMB139 engines.

Gearbox Gasket for 50cc 4-stroke QMB139 engines.

Left Crankcase Cover, Type-3 for 50cc 4-stroke QMB139 engines - Overall Length: 18.25 inches, 12 mounting holes. 

There are 3 versions of this cover, please check measurements before ordering.