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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1,249-1,296 of 1,758 Results
Nipple #7: FS-52 Supass Nipple #7: FS-52 Supass
5 out of 5 Customer Rating
Nipple #7: FS-52 Supass
$6.49
Needle Assembly #7H #7F Needle Assembly #7H #7F
4.4 out of 5 Customer Rating
Needle Assembly #7H #7F
$22.04
Standoff 5x19.1mm 3/4" (4): GT55 Standoff 5x19.1mm 3/4" (4): GT55
3.2 out of 5 Customer Rating
Standoff 5x19.1mm 3/4" (4): GT55
$31.50
Venturi #61N: FS72A Venturi #61N: FS72A
4.4 out of 5 Customer Rating
Venturi #61N: FS72A
$5.74 Price reduced from $19.14 to
Clearance Sale! ⓘ
Venturi Funnel 70R: FS155A-P Venturi Funnel 70R: FS155A-P
5 out of 5 Customer Rating
Venturi Funnel 70R: FS155A-P
$22.04
Main Shaft: OMA-2815-1100 Main Shaft: OMA-2815-1100
3.2 out of 5 Customer Rating
Main Shaft: OMA-2815-1100
$6.99
Muffler Extension 35mm: E-402 Muffler Extension 35mm: E-402
4.4 out of 5 Customer Rating
Muffler Extension 35mm: E-402
$22.26
Motor Mount: 25LA Motor Mount: 25LA
4.4 out of 5 Customer Rating
Motor Mount: 25LA
$25.29
Air Bleed Screw: FS-20, FS-40 Air Bleed Screw: FS-20, FS-40
3.4 out of 5 Customer Rating
Air Bleed Screw: FS-20, FS-40
$6.49
Front Bearing: 12-300 Front Bearing: 12-300
5 out of 5 Customer Rating
Front Bearing: 12-300
$21.17
Cam Cover: GF40 Cam Cover: GF40
4.8 out of 5 Customer Rating
Cam Cover: GF40
$5.76 Price reduced from $19.22 to
Clearance Sale! ⓘ
Carburetor Body: #70A Carburetor Body: #70A
4.8 out of 5 Customer Rating
Carburetor Body: #70A
$13.79 Price reduced from $45.99 to
Clearance Sale! ⓘ
Carburetor Body: 61D, 65AX Carburetor Body: 61D, 65AX
4 out of 5 Customer Rating
Carburetor Body: 61D, 65AX
$48.41
Crankcase: GGT15 Crankcase: GGT15
5 out of 5 Customer Rating
Crankcase: GGT15
$37.51 Price reduced from $125.03 to
Clearance Sale! ⓘ
Crankshaft: 37SZ-H Crankshaft: 37SZ-H
5 out of 5 Customer Rating
Crankshaft: 37SZ-H
$15.23 Price reduced from $50.76 to
Clearance Sale! ⓘ
Crankshaft: 10LA Crankshaft: 10LA
4 out of 5 Customer Rating
Crankshaft: 10LA
$20.99
Thermo Insulator: GF40 Thermo Insulator: GF40
3.6 out of 5 Customer Rating
Thermo Insulator: GF40
$30.44
Needle Assembly #40N Needle Assembly #40N
4 out of 5 Customer Rating
Needle Assembly #40N
$22.04
Piston Pin: FS-95V Piston Pin: FS-95V
5 out of 5 Customer Rating
Piston Pin: FS-95V
$11.95
Piston Pin: 61-300 Piston Pin: 61-300
4.4 out of 5 Customer Rating
Piston Pin: 61-300
$10.86
Prop Nut 10453 10-12 Prop Nut 10453 10-12
4.4 out of 5 Customer Rating
Prop Nut 10453 10-12
$6.49
Rotor Stop Screw #4D Rotor Stop Screw #4D
4.4 out of 5 Customer Rating
Rotor Stop Screw #4D
$6.49
Dust Cover: #2BK Dust Cover: #2BK
4 out of 5 Customer Rating
Dust Cover: #2BK
$10.86
Gasket Set: 12TZ Gasket Set: 12TZ
4.2 out of 5 Customer Rating
Gasket Set: 12TZ
$10.94
Head Gasket: 0.1, 0.15, T1201 Speed Head Gasket: 0.1, 0.15, T1201 Speed
3.6 out of 5 Customer Rating
Head Gasket: 0.1, 0.15, T1201 Speed
$9.55
Needle Valve Assembly #10J #10M Needle Valve Assembly #10J #10M
4.4 out of 5 Customer Rating
Needle Valve Assembly #10J #10M
$26.24
Mixture Control Valve 21M Mixture Control Valve 21M
5 out of 5 Customer Rating
Mixture Control Valve 21M
$19.05
Throttle Stop Screw 18TM Throttle Stop Screw 18TM
5 out of 5 Customer Rating
Throttle Stop Screw 18TM
$10.58
Carburetor 21J4 (B) B21 Adam Drake II without Reducer Carburetor 21J4 (B) B21 Adam Drake II without Reducer
4 out of 5 Customer Rating
Carburetor 21J4 (B) B21 Adam Drake II without Reducer
$119.76
M2004SC 85mm Manifold M2004SC 85mm Manifold
4.8 out of 5 Customer Rating
M2004SC 85mm Manifold
$65.28
Crankshaft: Speed B2102 Crankshaft: Speed B2102
5 out of 5 Customer Rating
Crankshaft: Speed B2102
$193.70
Cylinder & Piston: 21XZ-B Cylinder & Piston: 21XZ-B
4.4 out of 5 Customer Rating
Cylinder & Piston: 21XZ-B
$165.99
Outer Head: B2102 Speed Outer Head: B2102 Speed
3.6 out of 5 Customer Rating
Outer Head: B2102 Speed
$102.52
O.S. Outer Head Speed B2103 Type R & Type S O.S. Outer Head Speed B2103 Type R & Type S
5 out of 5 Customer Rating
O.S. Outer Head Speed B2103 Type R & Type S
$30.74 Price reduced from $102.47 to
Clearance Sale! ⓘ
Carburetor 61G: 91HZ-R Speed 3D 3C Carburetor 61G: 91HZ-R Speed 3D 3C
5 out of 5 Customer Rating
Carburetor 61G: 91HZ-R Speed 3D 3C
$303.60
M2003SC 70mm Manifold, Top Speed, On-Road M2003SC 70mm Manifold, Top Speed, On-Road
5 out of 5 Customer Rating
M2003SC 70mm Manifold, Top Speed, On-Road
$67.39
T-2060SC WN Tuned Pipe T-2060SC WN Tuned Pipe
3.6 out of 5 Customer Rating
T-2060SC WN Tuned Pipe
$45.72 Price reduced from $152.41 to
Clearance Sale! ⓘ
Carburetor Body: 22B2, 21XZ-B Ver2 Carburetor Body: 22B2, 21XZ-B Ver2
5 out of 5 Customer Rating
Carburetor Body: 22B2, 21XZ-B Ver2
$23.99 Price reduced from $79.99 to
Clearance Sale! ⓘ
Cylinder & Piston Assembly: 12TG Cylinder & Piston Assembly: 12TG
4.8 out of 5 Customer Rating
Cylinder & Piston Assembly: 12TG
$23.45 Price reduced from $78.15 to
Clearance Sale! ⓘ
Head Gasket: 28XZ Head Gasket: 28XZ
3.6 out of 5 Customer Rating
Head Gasket: 28XZ
$2.24 Price reduced from $7.46 to
Clearance Sale! ⓘ
Locknut Nozzle #2BK Locknut Nozzle #2BK
5 out of 5 Customer Rating
Locknut Nozzle #2BK
$2.59 Price reduced from $8.66 to
Clearance Sale! ⓘ
Connecting Rod O.S. Speed R21 Connecting Rod O.S. Speed R21
4.1 out of 5 Customer Rating
Connecting Rod O.S. Speed R21
$59.99
Intake Manifold Gasket 200 Surpass Intake Manifold Gasket 200 Surpass
5 out of 5 Customer Rating
Intake Manifold Gasket 200 Surpass
$7.46
Piston Pin: 75AX Piston Pin: 75AX
3.7 out of 5 Customer Rating
Piston Pin: 75AX
$3.57 Price reduced from $11.91 to
Clearance Sale! ⓘ
Control Arm: #9B Control Arm: #9B
4.5 out of 5 Customer Rating
Control Arm: #9B
$14.73
Drive Hub: 35AX Drive Hub: 35AX
4.1 out of 5 Customer Rating
Drive Hub: 35AX
$13.83
Drive Shaft Spacer: Sirius 7 Drive Shaft Spacer: Sirius 7
4.7 out of 5 Customer Rating
Drive Shaft Spacer: Sirius 7
$2.80 Price reduced from $9.44 to
Clearance Sale! ⓘ
E3071 Muffler E3071 Muffler
3.3 out of 5 Customer Rating
E3071 Muffler
$34.82
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