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Engine Parts

Stock parts for 49cc/50cc 4-stroke QMB139 engines. This engine is the most popular 50cc 4-stroke engine used in Chinese scooters.

New Products For March - Engine Parts

Cam Tensioner Bolt O-ring

Camshaft Tensioner Bolt O-ring for 50cc...

$0.99
Camshaft Chain Tensioner

Camshaft Chain Tensioner for 50cc 4-str...

$5.49
Cam Tensioner Gasket

Camshaft Tensioner Gasket for 50cc 4-st...

$1.99
Camshaft Tensioner

Camshaft Tensioner for 50cc 4-stroke QM...

$13.49
Rubber Seal 25*44*7

Rubber Seal size 25*44*7 for various cr...

$1.99
QMB139 Shortcase Engine

50cc 4-stroke QMB139 complete engine as...

$290.99

Monthly Specials For March

Standard CVT Belt 669-18-30

Stock CVT Drive Belt size 669-18-30 for...

$14.99 $12.00Save: 20% off
Air Filter Assembly

Complete Air Filter Assembly for 50cc 4...

$34.99 $24.99Save: 29% off