O.S. Engines

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Quality and performance has made O.S. the standard in RC engines for over 80 years.
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97-120 of 1,758 Results
Silencer E3080: 35AX Silencer E3080: 35AX
5 out of 5 Customer Rating
Silencer E3080: 35AX
$34.86
Piston: 37SZ-H Piston: 37SZ-H
3.6 out of 5 Customer Rating
Piston: 37SZ-H
$32.56
Piston Ring: 108FSR Piston Ring: 108FSR
4.1 out of 5 Customer Rating
Piston Ring: 108FSR
$29.60
Inner Head: T1202 Speed Inner Head: T1202 Speed
5 out of 5 Customer Rating
Inner Head: T1202 Speed
$37.99
Front Bearing: 21XZ-B Front Bearing: 21XZ-B
5 out of 5 Customer Rating
Front Bearing: 21XZ-B
$30.44
Needle #40N Needle #40N
5 out of 5 Customer Rating
Needle #40N
$13.78
Drive Washer: FS-95V8 Drive Washer: FS-95V8
3.4 out of 5 Customer Rating
Drive Washer: FS-95V8
$10.94
Gasket Set: 25FX Gasket Set: 25FX
3.3 out of 5 Customer Rating
Gasket Set: 25FX
$7.46
Inner Head O-Ring: (S-32)(Black) B2104 Inner Head O-Ring: (S-32)(Black) B2104
4.9 out of 5 Customer Rating
Inner Head O-Ring: (S-32)(Black) B2104
$10.70
Ball Link #3 20K: 21VZ-R Ball Link #3 20K: 21VZ-R
5 out of 5 Customer Rating
Ball Link #3 20K: 21VZ-R
$5.15 Price reduced from $17.16 to
Clearance Sale! ⓘ
Cover Plate: FS-200S-P Cover Plate: FS-200S-P
4.1 out of 5 Customer Rating
Cover Plate: FS-200S-P
$25.44
Crankcase: 35AX Crankcase: 35AX
3.3 out of 5 Customer Rating
Crankcase: 35AX
$48.51
Crankcase Heat Sink: 91HZ Crankcase Heat Sink: 91HZ
3.7 out of 5 Customer Rating
Crankcase Heat Sink: 91HZ
$29.60
Cylinder Head: GGT15 Cylinder Head: GGT15
4.1 out of 5 Customer Rating
Cylinder Head: GGT15
$52.69
Drive Washer: GT55 Drive Washer: GT55
3.7 out of 5 Customer Rating
Drive Washer: GT55
$52.69
Exhaust Pipe Nut: FS-120 III Exhaust Pipe Nut: FS-120 III
3.9 out of 5 Customer Rating
Exhaust Pipe Nut: FS-120 III
$6.49
Front Plate: Sirius 7 Front Plate: Sirius 7
5 out of 5 Customer Rating
Front Plate: Sirius 7
$140.04 Price reduced from $346.53 to
Clearance Sale! ⓘ
Cylinder Head Gasket, .2mm: 91HZ Cylinder Head Gasket, .2mm: 91HZ
3.7 out of 5 Customer Rating
Cylinder Head Gasket, .2mm: 91HZ
$7.46
Mixture Control Valve 80T: Sirius 7 Mixture Control Valve 80T: Sirius 7
3.3 out of 5 Customer Rating
Mixture Control Valve 80T: Sirius 7
$6.33 Price reduced from $21.12 to
Clearance Sale! ⓘ
Muffler Screws L (2): 120AX Muffler Screws L (2): 120AX
3.9 out of 5 Customer Rating
Muffler Screws L (2): 120AX
$6.49
Needle Assembly 80T: Sirius 7 Needle Assembly 80T: Sirius 7
5 out of 5 Customer Rating
Needle Assembly 80T: Sirius 7
$11.80
Pushrod Cover: FT-120-240 Pushrod Cover: FT-120-240
3.7 out of 5 Customer Rating
Pushrod Cover: FT-120-240
$4.58 Price reduced from $9.44 to
Clearance Sale! ⓘ
Piston Pin Retainer P: 40-46 Piston Pin Retainer P: 40-46
3.9 out of 5 Customer Rating
Piston Pin Retainer P: 40-46
$6.49
Piston Pin: FS-91 Surpass Piston Pin: FS-91 Surpass
3.3 out of 5 Customer Rating
Piston Pin: FS-91 Surpass
$10.86
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