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Crankcase

Stock parts for 49cc/50cc 4-stroke QMB139 engines. This engine is the most popular 50cc 4-stroke engine used in Chinese scooters.
Product Image Item Name- Price
17x30x6 Oil Seal

Oil Seal size 17x30x6 for 50cc 4-stroke...

$2.99
6201-2RS Bearing

Crankcase Bearing size 6201-2RS for 50c...

$6.49
Adjustment Screw and Nut

Camshaft Adjustment Screw and Nut Set f...

$2.99
Camshaft

Camshaft for 50cc 4-stroke QMB139 engin...

$29.99
Camshaft Seat

Camshaft Seat for 50cc 4-stroke QMB139 ...

$14.99
Crank Case Long Stud Bolt

Crank Case Long Stud Bolt for 50cc 4-st...

$3.49
Cylinder Bolt

Short Cylinder Stud Bolt for 50cc 4-str...

$2.99
Dowel Pin

Camshaft Dowel Pin for 50cc 4-stroke QM...

$1.99
Drain Bolt

Drain Bolt for 50cc 4-stroke QMB139 eng...

$1.99
Drain Bolt Washer

Drain Bolt Washer for 50cc 4-stroke QMB...

$0.99
Front Crankcase Bushing

Front Crankcase Bushing for 50cc 4-stro...

$3.99
Left Crankcase, Type-1

Left Crankcase, Type-1 for 50cc 4-strok...

$69.99


New Products For August - FULL-SIZE SCOOTERS PARTS

Main Stand Pin

Main Stand Pin for 50cc 4-stroke QMB139...

$2.99
Crank Case Long Stud Bolt

Crank Case Long Stud Bolt for 50cc 4-st...

$3.49
Cylinder Bolt

Short Cylinder Stud Bolt for 50cc 4-str...

$2.99
Drain Bolt Washer

Drain Bolt Washer for 50cc 4-stroke QMB...

$0.99
Drain Bolt

Drain Bolt for 50cc 4-stroke QMB139 eng...

$1.99
Starter Clutch Bushing

Starter Clutch Bushing for 50cc 4-strok...

$2.49

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