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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865-912 of 1,758 Results
Crankcase: B2102 Speed Crankcase: B2102 Speed
4.9 out of 5 Customer Rating
Crankcase: B2102 Speed
$147.19
Radial Mount Set: GF30, GF30II Radial Mount Set: GF30, GF30II
4.2 out of 5 Customer Rating
Radial Mount Set: GF30, GF30II
$99.99
Carburetor #70N: FS120SII Carburetor #70N: FS120SII
4 out of 5 Customer Rating
Carburetor #70N: FS120SII
$141.93
Cylinder Head Fixing Screws: 21TM Cylinder Head Fixing Screws: 21TM
4.8 out of 5 Customer Rating
Cylinder Head Fixing Screws: 21TM
$9.85
E-4051 Muffler: GT15HZ E-4051 Muffler: GT15HZ
5 out of 5 Customer Rating
E-4051 Muffler: GT15HZ
$97.70
Choke Arm Assembly: WLA-2, GT55 Choke Arm Assembly: WLA-2, GT55
5 out of 5 Customer Rating
Choke Arm Assembly: WLA-2, GT55
$7.46
Back Plate: 40-46 LA Back Plate: 40-46 LA
5 out of 5 Customer Rating
Back Plate: 40-46 LA
$11.80
Crankshaft: 55HZ Hyper Crankshaft: 55HZ Hyper
4.4 out of 5 Customer Rating
Crankshaft: 55HZ Hyper
$66.24
Crankcase: FT-160 Crankcase: FT-160
5 out of 5 Customer Rating
Crankcase: FT-160
$174.34
Cylinder & Piston: 35AX Cylinder & Piston: 35AX
5 out of 5 Customer Rating
Cylinder & Piston: 35AX
$29.85 Price reduced from $99.51 to
Clearance Sale! ⓘ
Drive Washer: GT15 Drive Washer: GT15
4.8 out of 5 Customer Rating
Drive Washer: GT15
$11.97 Price reduced from $39.91 to
Clearance Sale! ⓘ
Exhaust Pipe Nut: FS-120 Surpass Exhaust Pipe Nut: FS-120 Surpass
5 out of 5 Customer Rating
Exhaust Pipe Nut: FS-120 Surpass
$6.49
Mixture Control Valve 61H: GT15 Mixture Control Valve 61H: GT15
4.4 out of 5 Customer Rating
Mixture Control Valve 61H: GT15
$26.24
Muffler Screws 20-46 (2) Muffler Screws 20-46 (2)
3.2 out of 5 Customer Rating
Muffler Screws 20-46 (2)
$6.49
Needle: 15LA Needle: 15LA
3.4 out of 5 Customer Rating
Needle: 15LA
$9.85
Needle: #60B Needle: #60B
5 out of 5 Customer Rating
Needle: #60B
$14.73
Piston Ring: FT-120 240 Piston Ring: FT-120 240
4.4 out of 5 Customer Rating
Piston Ring: FT-120 240
$29.60
Spark Plug 1 4-32 RCE: GF30 Spark Plug 1 4-32 RCE: GF30
4.4 out of 5 Customer Rating
Spark Plug 1 4-32 RCE: GF30
$24.44
Return Spring: #6H, #7H, #8H Return Spring: #6H, #7H, #8H
5 out of 5 Customer Rating
Return Spring: #6H, #7H, #8H
$4.99
Hex Head Screw 5x60mm (10): GT60 Hex Head Screw 5x60mm (10): GT60
3.6 out of 5 Customer Rating
Hex Head Screw 5x60mm (10): GT60
$15.76
Slide Valve #60U Slide Valve #60U
5 out of 5 Customer Rating
Slide Valve #60U
$8.88 Price reduced from $29.60 to
Clearance Sale! ⓘ
Bearing L-1360ZZ Bearing L-1360ZZ
4.4 out of 5 Customer Rating
Bearing L-1360ZZ
$14.99
Pump Plate 1 (PD-09): GF30 II Pump Plate 1 (PD-09): GF30 II
5 out of 5 Customer Rating
Pump Plate 1 (PD-09): GF30 II
$44.30
O.S. MAX FS-52 SURPASS O.S. MAX FS-52 SURPASS
4.8 out of 5 Customer Rating
O.S. MAX FS-52 SURPASS
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Carburetor 40K: 46AXII Carburetor 40K: 46AXII
4.8 out of 5 Customer Rating
Carburetor 40K: 46AXII
$97.72
Spinner Nut: 20-48 Spinner Nut: 20-48
4 out of 5 Customer Rating
Spinner Nut: 20-48
$11.91
Carburetor Body: 61R, FS81 Alpha Pump Carburetor Body: 61R, FS81 Alpha Pump
5 out of 5 Customer Rating
Carburetor Body: 61R, FS81 Alpha Pump
$87.39
Connecting Rod: FS-61, 91 Connecting Rod: FS-61, 91
5 out of 5 Customer Rating
Connecting Rod: FS-61, 91
$26.24
Cover Plate: 75AX Cover Plate: 75AX
4.2 out of 5 Customer Rating
Cover Plate: 75AX
$5.15 Price reduced from $17.16 to
Clearance Sale! ⓘ
Crankcase: FS-91-P Crankcase: FS-91-P
4 out of 5 Customer Rating
Crankcase: FS-91-P
$119.77
Crankshaft: FS81 Alpha Crankshaft: FS81 Alpha
5 out of 5 Customer Rating
Crankshaft: FS81 Alpha
$73.87
Cylinder Head: FS-62V Cylinder Head: FS-62V
5 out of 5 Customer Rating
Cylinder Head: FS-62V
$27.30 Price reduced from $76.88 to
Clearance Sale! ⓘ
Head Gasket 0.2T: GT22 Head Gasket 0.2T: GT22
5 out of 5 Customer Rating
Head Gasket 0.2T: GT22
$7.46
Ignition Module IG-05: GT15HZ Ignition Module IG-05: GT15HZ
4.4 out of 5 Customer Rating
Ignition Module IG-05: GT15HZ
$119.78
Muffler Assembly Screw E2050-2: 21XM V2 Outboard Muffler Assembly Screw E2050-2: 21XM V2 Outboard
4 out of 5 Customer Rating
Muffler Assembly Screw E2050-2: 21XM V2 Outboard
$9.44
Piston Pin: 91RZ-H Ring Heli Piston Pin: 91RZ-H Ring Heli
5 out of 5 Customer Rating
Piston Pin: 91RZ-H Ring Heli
$11.99
Piston: GT60 Piston: GT60
4.8 out of 5 Customer Rating
Piston: GT60
$45.74 Price reduced from $152.45 to
Clearance Sale! ⓘ
Piston: FS72 Alpha Piston: FS72 Alpha
5 out of 5 Customer Rating
Piston: FS72 Alpha
$12.63 Price reduced from $42.11 to
Clearance Sale! ⓘ
Reed Valve Assembly: GT22 Reed Valve Assembly: GT22
5 out of 5 Customer Rating
Reed Valve Assembly: GT22
$26.99
Rocker Arm: FS115A-P Rocker Arm: FS115A-P
4.4 out of 5 Customer Rating
Rocker Arm: FS115A-P
$33.71
Rotation Sensor: GT33 Rotation Sensor: GT33
5 out of 5 Customer Rating
Rotation Sensor: GT33
$38.95
Screw Set(10): 160FX Screw Set(10): 160FX
5 out of 5 Customer Rating
Screw Set(10): 160FX
$17.16
Lock Washer 4mm Lock Washer 4mm
4.8 out of 5 Customer Rating
Lock Washer 4mm
$5.74 Price reduced from $19.14 to
Clearance Sale! ⓘ
Bearing L-1040X2ZZ Bearing L-1040X2ZZ
5 out of 5 Customer Rating
Bearing L-1040X2ZZ
$14.99
Main Shaft: OMA-2810-1250 Main Shaft: OMA-2810-1250
5 out of 5 Customer Rating
Main Shaft: OMA-2810-1250
$6.99
Slide Valve Stop Screw #21J Slide Valve Stop Screw #21J
5 out of 5 Customer Rating
Slide Valve Stop Screw #21J
$3.56 Price reduced from $11.87 to
Clearance Sale! ⓘ
#5 Recoil Starter Body #5 Recoil Starter Body
4.6 out of 5 Customer Rating
#5 Recoil Starter Body
$26.24
Ball Link No.5 18TM Ball Link No.5 18TM
4.4 out of 5 Customer Rating
Ball Link No.5 18TM
$16.09
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