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Engine Parts

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

New Products For July - Engine Parts

Intake O-ring

Intake to Cylinder Head O-ring size 17....

$0.99
QMB139 Intake Manifold Gasket

Intake Manifold Gasket for 50cc 4-strok...

$1.99
Intake Valve

Intake Valve for 50cc 4-stroke QMB139 e...

$7.99
Valve Oil Seal

Valve Oil Seal for 50cc 4-stroke QMB139...

$4.99
Valve Washer

Valve Washer size 16x23 for 50cc 4-stro...

$0.99
Outer Valve Spring

Outer Valve Spring for 50cc 4-stroke QM...

$2.99

Monthly Specials For July

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