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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
17x30x6 Oil Seal...

Oil Seal size 17x30x6 for 50cc 4-stroke...
$2.99
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6201-2RS Bearing
6201-2RS Bearing...

Crankcase Bearing size 6201-2RS for 50c...
$6.49
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Adjustment Screw and Nut
Adjustment Screw and Nut...

Camshaft Adjustment Screw and Nut Set f...
$2.99
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Camshaft
Camshaft...

Camshaft for 50cc 4-stroke QMB139 engin...
$29.99
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Camshaft Seat
Camshaft Seat...

Camshaft Seat for 50cc 4-stroke QMB139 ...
$14.99
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Crank Case Long Stud Bolt
Crank Case Long Stud Bolt...

Crank Case Long Stud Bolt for 50cc 4-st...
$3.49
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Cylinder Bolt
Cylinder Bolt...

Short Cylinder Stud Bolt for 50cc 4-str...
$2.99
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Dowel Pin
Dowel Pin...

Camshaft Dowel Pin for 50cc 4-stroke QM...
$1.99
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Drain Bolt
Drain Bolt...

Drain Bolt for 50cc 4-stroke QMB139 eng...
$1.99
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Drain Bolt Washer
Drain Bolt Washer...

Drain Bolt Washer for 50cc 4-stroke QMB...
$0.99
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Front Crankcase Bushing
Front Crankcase Bushing...

Front Crankcase Bushing for 50cc 4-stro...
$3.99
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Left Crankcase, Type-1
Left Crankcase, Type-1...

Left Crankcase, Type-1 for 50cc 4-strok...
$69.99
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New Products For August - FULL-SIZE SCOOTERS PARTS

Main Stand Pin
Main Stand Pin

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

$2.99
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Crank Case Long Stud Bolt
Crank Case Long Stud Bolt

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

$3.49
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Cylinder Bolt
Cylinder Bolt

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

$2.99
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Drain Bolt Washer
Drain Bolt Washer

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

$0.99
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Drain Bolt
Drain Bolt

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

$1.99
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Starter Clutch Bushing
Starter Clutch Bushing

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

$2.49
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