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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169-192 of 1,605 Results
Exhaust Pipe Assembly: FS81 Alpha Exhaust Pipe Assembly: FS81 Alpha
4.7 out of 5 Customer Rating
Exhaust Pipe Assembly: FS81 Alpha
$19.14
Spring Needle Adjust WLA-2: GT55 Spring Needle Adjust WLA-2: GT55
5 out of 5 Customer Rating
Spring Needle Adjust WLA-2: GT55
$10.99
Cylinder Head: 120AX Cylinder Head: 120AX
5 out of 5 Customer Rating
Cylinder Head: 120AX
$57.78
Silencer Assembly Screws: #F-6010 FS-200S Silencer Assembly Screws: #F-6010 FS-200S
4.8 out of 5 Customer Rating
Silencer Assembly Screws: #F-6010 FS-200S
$9.85
Prop Shaft: OMA-38 Series Prop Shaft: OMA-38 Series
5 out of 5 Customer Rating
Prop Shaft: OMA-38 Series
$27.99
Pump Fixing Screw Assembly: 91SZ-H Hyper Pump Fixing Screw Assembly: 91SZ-H Hyper
4.2 out of 5 Customer Rating
Pump Fixing Screw Assembly: 91SZ-H Hyper
$5.70
Carburetor Rotor: 56 FS Carburetor Rotor: 56 FS
4.4 out of 5 Customer Rating
Carburetor Rotor: 56 FS
$8.88 Price reduced from $29.60 to
Clearance Sale! ⓘ
Crankshaft: 20-25FP Crankshaft: 20-25FP
5 out of 5 Customer Rating
Crankshaft: 20-25FP
$28.59
Manifold Nut M9 Manifold Nut M9
3.6 out of 5 Customer Rating
Manifold Nut M9
$6.49
Needle Holder FT-120-300 Needle Holder FT-120-300
4 out of 5 Customer Rating
Needle Holder FT-120-300
$3.54 Price reduced from $11.80 to
Clearance Sale! ⓘ
Rocker Cover: GF30 Rocker Cover: GF30
3.6 out of 5 Customer Rating
Rocker Cover: GF30
$5.72 Price reduced from $19.05 to
Clearance Sale! ⓘ
Inner Head: 21XZ-R Speed Inner Head: 21XZ-R Speed
3.6 out of 5 Customer Rating
Inner Head: 21XZ-R Speed
$57.96
Rear Bearing: 12TR Rear Bearing: 12TR
5 out of 5 Customer Rating
Rear Bearing: 12TR
$61.99
Metering Needle Assembly 22C(B): Speed B2102 Metering Needle Assembly 22C(B): Speed B2102
5 out of 5 Customer Rating
Metering Needle Assembly 22C(B): Speed B2102
$5.74 Price reduced from $19.14 to
Clearance Sale! ⓘ
Gasket Carb IP: #10, FR5 Gasket Carb IP: #10, FR5
4.5 out of 5 Customer Rating
Gasket Carb IP: #10, FR5
$6.49
Connecting Rod Plate: GGT10 Connecting Rod Plate: GGT10
3.1 out of 5 Customer Rating
Connecting Rod Plate: GGT10
$6.68 Price reduced from $22.26 to
Clearance Sale! ⓘ
Back Plate Parallel Pin: Sirius 7 Back Plate Parallel Pin: Sirius 7
4.5 out of 5 Customer Rating
Back Plate Parallel Pin: Sirius 7
$6.49
Cylinder Head: 91HZ-PS Cylinder Head: 91HZ-PS
3.7 out of 5 Customer Rating
Cylinder Head: 91HZ-PS
$89.99
Piston: FS-120 Piston: FS-120
3.3 out of 5 Customer Rating
Piston: FS-120
$51.47
Main Shaft: 3815-1000 Main Shaft: 3815-1000
4.3 out of 5 Customer Rating
Main Shaft: 3815-1000
$8.99
Speed P3 Gold Ultra Hot Plug Speed P3 Gold Ultra Hot Plug
5 out of 5 Customer Rating
Speed P3 Gold Ultra Hot Plug
$16.99
Woodruff Key: 61S RFH Woodruff Key: 61S RFH
5 out of 5 Customer Rating
Woodruff Key: 61S RFH
$7.46
Motor Mount: 46, 55AX Motor Mount: 46, 55AX
3.3 out of 5 Customer Rating
Motor Mount: 46, 55AX
$34.86
Long Spinner Nut 1/4"-28 Long Spinner Nut 1/4"-28
4.1 out of 5 Customer Rating
Long Spinner Nut 1/4"-28
$11.80
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