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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385-432 of 1,758 Results
Nozzle: 15FP-S RN Nozzle: 15FP-S RN
5 out of 5 Customer Rating
Nozzle: 15FP-S RN
$9.85
Pushrod Cover Assembly: 120Surpass Pushrod Cover Assembly: 120Surpass
4.7 out of 5 Customer Rating
Pushrod Cover Assembly: 120Surpass
$22.04
Piston: 50SX-H Piston: 50SX-H
4.1 out of 5 Customer Rating
Piston: 50SX-H
$37.80
Rocker Arm Assembly: 200 Surpass Rocker Arm Assembly: 200 Surpass
4.1 out of 5 Customer Rating
Rocker Arm Assembly: 200 Surpass
$11.05 Price reduced from $36.85 to
Clearance Sale! ⓘ
Intake Manifold: 56 FS Intake Manifold: 56 FS
4.1 out of 5 Customer Rating
Intake Manifold: 56 FS
$19.14
Rear Bearing: 61-300 Rear Bearing: 61-300
4.5 out of 5 Customer Rating
Rear Bearing: 61-300
$22.16
Carburetor Screw: FS61-FT300 Carburetor Screw: FS61-FT300
4.1 out of 5 Customer Rating
Carburetor Screw: FS61-FT300
$6.49
Connecting Rod: GT15HZ Connecting Rod: GT15HZ
3.1 out of 5 Customer Rating
Connecting Rod: GT15HZ
$17.33 Price reduced from $57.77 to
Clearance Sale! ⓘ
Connecting Rod: 28XZ Connecting Rod: 28XZ
5 out of 5 Customer Rating
Connecting Rod: 28XZ
$14.55 Price reduced from $48.51 to
Clearance Sale! ⓘ
Crankcase: T1201 Speed Crankcase: T1201 Speed
5 out of 5 Customer Rating
Crankcase: T1201 Speed
$87.17
Crankshaft: 91HZ-R Speed 3D 3C Crankshaft: 91HZ-R Speed 3D 3C
4.7 out of 5 Customer Rating
Crankshaft: 91HZ-R Speed 3D 3C
$102.54
Fuel Nipple: #20A, B Fuel Nipple: #20A, B
3.1 out of 5 Customer Rating
Fuel Nipple: #20A, B
$10.86
Needle Valve Assembly 12F2-B: Speed T1202 Needle Valve Assembly 12F2-B: Speed T1202
3.9 out of 5 Customer Rating
Needle Valve Assembly 12F2-B: Speed T1202
$8.19 Price reduced from $27.29 to
Clearance Sale! ⓘ
Slide Valve 22C(B): Speed B2102 Slide Valve 22C(B): Speed B2102
4.7 out of 5 Customer Rating
Slide Valve 22C(B): Speed B2102
$10.08 Price reduced from $33.61 to
Clearance Sale! ⓘ
Cover Plate: 21VG-P Cover Plate: 21VG-P
3.7 out of 5 Customer Rating
Cover Plate: 21VG-P
$13.78
Outer Head: R2102 Speed Outer Head: R2102 Speed
5 out of 5 Customer Rating
Outer Head: R2102 Speed
$91.34
Piston Pin: 30VG Piston Pin: 30VG
4.7 out of 5 Customer Rating
Piston Pin: 30VG
$11.91
Breather Nipple: FS-20, 40 Breather Nipple: FS-20, 40
3.4 out of 5 Customer Rating
Breather Nipple: FS-20, 40
$6.49
Cam Cover: FS-120 III Cam Cover: FS-120 III
3.4 out of 5 Customer Rating
Cam Cover: FS-120 III
$3.26 Price reduced from $10.86 to
Clearance Sale! ⓘ
Cam Follower: FS-61, 48 Surpass Cam Follower: FS-61, 48 Surpass
3.8 out of 5 Customer Rating
Cam Follower: FS-61, 48 Surpass
$17.08
Carburetor Body: #60M Carburetor Body: #60M
3.4 out of 5 Customer Rating
Carburetor Body: #60M
$21.43 Price reduced from $71.43 to
Clearance Sale! ⓘ
Crankcase: 37SZ-H Crankcase: 37SZ-H
5 out of 5 Customer Rating
Crankcase: 37SZ-H
$52.69
Water Nipple: #2 Water Nipple: #2
5 out of 5 Customer Rating
Water Nipple: #2
$6.49
Muffler F6020; FS155A-P Muffler F6020; FS155A-P
5 out of 5 Customer Rating
Muffler F6020; FS155A-P
$87.21
Assembly Screw E3080: 35AX Assembly Screw E3080: 35AX
5 out of 5 Customer Rating
Assembly Screw E3080: 35AX
$8.43
Mix Control Valve Assembly: #60 Mix Control Valve Assembly: #60
4.6 out of 5 Customer Rating
Mix Control Valve Assembly: #60
$25.29
Needle Assembly #60R Needle Assembly #60R
4 out of 5 Customer Rating
Needle Assembly #60R
$22.04
Pushrod Cover Assembly: FS-70 Ultimate Pushrod Cover Assembly: FS-70 Ultimate
5 out of 5 Customer Rating
Pushrod Cover Assembly: FS-70 Ultimate
$17.99
Screw Set (8): 25LA Screw Set (8): 25LA
3.2 out of 5 Customer Rating
Screw Set (8): 25LA
$8.43
Rocker Cover: 200 Surpass Rocker Cover: 200 Surpass
4.4 out of 5 Customer Rating
Rocker Cover: 200 Surpass
$22.04
Carburetor Complete #61N: FS72 Alpha Carburetor Complete #61N: FS72 Alpha
5 out of 5 Customer Rating
Carburetor Complete #61N: FS72 Alpha
$102.96
60 Degree Exhaust Header: 155FS-a 60 Degree Exhaust Header: 155FS-a
4.8 out of 5 Customer Rating
60 Degree Exhaust Header: 155FS-a
$14.55 Price reduced from $48.51 to
Clearance Sale! ⓘ
Rear Bearing: FS52 Rear Bearing: FS52
5 out of 5 Customer Rating
Rear Bearing: FS52
$22.04
Carburetor Rotor: #120AX Carburetor Rotor: #120AX
5 out of 5 Customer Rating
Carburetor Rotor: #120AX
$37.80
Crankcase: 200 Surpass Crankcase: 200 Surpass
3.4 out of 5 Customer Rating
Crankcase: 200 Surpass
$190.28
Piston: 56 FS Piston: 56 FS
4 out of 5 Customer Rating
Piston: 56 FS
$29.49
Cylinder Head with Valves: FS120SE Cylinder Head with Valves: FS120SE
4.2 out of 5 Customer Rating
Cylinder Head with Valves: FS120SE
$185.03
Cylinder Head & Valve: FF-320 Cylinder Head & Valve: FF-320
5 out of 5 Customer Rating
Cylinder Head & Valve: FF-320
$135.66
Cylinder Liner: 91SZ-H Cylinder Liner: 91SZ-H
4.8 out of 5 Customer Rating
Cylinder Liner: 91SZ-H
$99.65
Super Can Filter, Small Super Can Filter, Small
4.4 out of 5 Customer Rating
Super Can Filter, Small
$11.80
Pulse Spacer: GGT10 Pulse Spacer: GGT10
5 out of 5 Customer Rating
Pulse Spacer: GGT10
$17.11
Head Gasket: FF-320 Head Gasket: FF-320
4.4 out of 5 Customer Rating
Head Gasket: FF-320
$4.20 Price reduced from $6.49 to
Clearance Sale! ⓘ
Intake Pipe Holder Assembly: FR5-300 Intake Pipe Holder Assembly: FR5-300
4 out of 5 Customer Rating
Intake Pipe Holder Assembly: FR5-300
$15.99
Prop Nut Safety: FT-120 II FT-160 Prop Nut Safety: FT-120 II FT-160
3.2 out of 5 Customer Rating
Prop Nut Safety: FT-120 II FT-160
$36.85
Rocker Arm Assembly FS-20 Rocker Arm Assembly FS-20
5 out of 5 Customer Rating
Rocker Arm Assembly FS-20
$22.04
Rotor Stop #4B #4D #4C Rotor Stop #4B #4D #4C
4.4 out of 5 Customer Rating
Rotor Stop #4B #4D #4C
$9.85
Ball WLA-2: GT55 Ball WLA-2: GT55
5 out of 5 Customer Rating
Ball WLA-2: GT55
$6.99
Valve: FS-40 48Surpass Valve: FS-40 48Surpass
3.6 out of 5 Customer Rating
Valve: FS-40 48Surpass
$21.10
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