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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224-247 of 1,808 Results
Crankshaft: 21 Speed V-Spec Crankshaft: 21 Speed V-Spec
5 out of 5 Customer Rating
Crankshaft: 21 Speed V-Spec
$174.99
O.S. Outer Head Speed: T1203 O.S. Outer Head Speed: T1203
3.9 out of 5 Customer Rating
O.S. Outer Head Speed: T1203
$89.99
O.S. Built-Up Parts Set Cyl Piston OS Speed R21GT O.S. Built-Up Parts Set Cyl Piston OS Speed R21GT
3.3 out of 5 Customer Rating
O.S. Built-Up Parts Set Cyl Piston OS Speed R21GT
$298.61
Heat Sink Head: 30VG Heat Sink Head: 30VG
3.1 out of 5 Customer Rating
Heat Sink Head: 30VG
$91.34
Inner Head: 12XZ Speed Inner Head: 12XZ Speed
5 out of 5 Customer Rating
Inner Head: 12XZ Speed
$30.99
Gasket Set: 12TG Gasket Set: 12TG
4.5 out of 5 Customer Rating
Gasket Set: 12TG
$10.94
Pump Plate (PD-09) 2/3 Assembly: GF30 II Pump Plate (PD-09) 2/3 Assembly: GF30 II
3.4 out of 5 Customer Rating
Pump Plate (PD-09) 2/3 Assembly: GF30 II
$71.58
Pan Head Screw +3.0X12 (10) Pan Head Screw +3.0X12 (10)
4.8 out of 5 Customer Rating
Pan Head Screw +3.0X12 (10)
$9.53
Carburetor #60M: 91SXH-PS Carburetor #60M: 91SXH-PS
5 out of 5 Customer Rating
Carburetor #60M: 91SXH-PS
$52.49 Price reduced from $149.99 to
Clearance Sale! ⓘ
Carburetor Assemblyy Screw WLA-2: GT55 Carburetor Assemblyy Screw WLA-2: GT55
4 out of 5 Customer Rating
Carburetor Assemblyy Screw WLA-2: GT55
$5.99
90 Degree In-Cowl Header: FS110A 90 Degree In-Cowl Header: FS110A
4.8 out of 5 Customer Rating
90 Degree In-Cowl Header: FS110A
$36.85
Intake Manifold 200 Surpass Intake Manifold 200 Surpass
4.2 out of 5 Customer Rating
Intake Manifold 200 Surpass
$34.86
Motor Mount: 15CV-A, 10LA Motor Mount: 15CV-A, 10LA
4 out of 5 Customer Rating
Motor Mount: 15CV-A, 10LA
$25.44
Front Bearing: 90-300 Front Bearing: 90-300
4 out of 5 Customer Rating
Front Bearing: 90-300
$22.16
Camshaft: FS72 Alpha Camshaft: FS72 Alpha
4.2 out of 5 Customer Rating
Camshaft: FS72 Alpha
$54.63
Connecting Rod: FS-120 SP Connecting Rod: FS-120 SP
5 out of 5 Customer Rating
Connecting Rod: FS-120 SP
$40.12
Connecting Rod Bearing: GGT10 Connecting Rod Bearing: GGT10
5 out of 5 Customer Rating
Connecting Rod Bearing: GGT10
$25.44
Connecting Rod: GF40 Connecting Rod: GF40
4.2 out of 5 Customer Rating
Connecting Rod: GF40
$70.40
Back Plate: Sirius 7 Back Plate: Sirius 7
4.2 out of 5 Customer Rating
Back Plate: Sirius 7
$466.21
Crankcase: GT15 Crankcase: GT15
5 out of 5 Customer Rating
Crankcase: GT15
$125.03
Crankpin Stop Screw: GT60 Crankpin Stop Screw: GT60
4.8 out of 5 Customer Rating
Crankpin Stop Screw: GT60
$11.80
Cylinder & Piston: 25FX Cylinder & Piston: 25FX
5 out of 5 Customer Rating
Cylinder & Piston: 25FX
$40.73
Piston: 37SZ-H Piston: 37SZ-H
3.6 out of 5 Customer Rating
Piston: 37SZ-H
$32.56
Cylinder Head: FS-91-P Cylinder Head: FS-91-P
4.8 out of 5 Customer Rating
Cylinder Head: FS-91-P
$81.94
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