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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673-720 of 1,758 Results
Pushrod: FS-95V Pushrod: FS-95V
4.2 out of 5 Customer Rating
Pushrod: FS-95V
$10.49
Cover Fitting Screw (4) FL-70 Cover Fitting Screw (4) FL-70
5 out of 5 Customer Rating
Cover Fitting Screw (4) FL-70
$4.99
Motor Mount: OMA-50 Series Motor Mount: OMA-50 Series
5 out of 5 Customer Rating
Motor Mount: OMA-50 Series
$19.99
Carburetor Complete #40NA: 56FS Carburetor Complete #40NA: 56FS
5 out of 5 Customer Rating
Carburetor Complete #40NA: 56FS
$35.01 Price reduced from $87.19 to
Clearance Sale! ⓘ
Carburetor Complete WT1054: GT22 Carburetor Complete WT1054: GT22
5 out of 5 Customer Rating
Carburetor Complete WT1054: GT22
$184.94
Carburetor Body: #10G Carburetor Body: #10G
5 out of 5 Customer Rating
Carburetor Body: #10G
$17.16
Cover Plate: 46AXII Cover Plate: 46AXII
5 out of 5 Customer Rating
Cover Plate: 46AXII
$11.80
Cover Plate: 35AX Cover Plate: 35AX
4.4 out of 5 Customer Rating
Cover Plate: 35AX
$3.54 Price reduced from $11.80 to
Clearance Sale! ⓘ
Crankshaft: FS-52 Crankshaft: FS-52
5 out of 5 Customer Rating
Crankshaft: FS-52
$47.99
Cylinder Head: .35AX Cylinder Head: .35AX
5 out of 5 Customer Rating
Cylinder Head: .35AX
$22.04
Cylinder Head: 120AX Cylinder Head: 120AX
5 out of 5 Customer Rating
Cylinder Head: 120AX
$57.78
Cylinder Liner: GT22 Cylinder Liner: GT22
4.4 out of 5 Customer Rating
Cylinder Liner: GT22
$69.76
Gasket Set: 55AX Gasket Set: 55AX
5 out of 5 Customer Rating
Gasket Set: 55AX
$11.80
Head Gasket: 25LA Head Gasket: 25LA
5 out of 5 Customer Rating
Head Gasket: 25LA
$6.49
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
O-Ring Large: 120-300 O-Ring Large: 120-300
3.6 out of 5 Customer Rating
O-Ring Large: 120-300
$6.49
Piston Pin Retainer: 50SX-H Piston Pin Retainer: 50SX-H
4.4 out of 5 Customer Rating
Piston Pin Retainer: 50SX-H
$7.46
Piston: FS110A Piston: FS110A
4.4 out of 5 Customer Rating
Piston: FS110A
$48.51
Piston: GT15 Piston: GT15
4 out of 5 Customer Rating
Piston: GT15
$17.33 Price reduced from $57.78 to
Clearance Sale! ⓘ
Prop Washer: 61-90 Prop Washer: 61-90
4 out of 5 Customer Rating
Prop Washer: 61-90
$6.49
Rocker Arm Support Assembly: 120 Surpass Rocker Arm Support Assembly: 120 Surpass
4.8 out of 5 Customer Rating
Rocker Arm Support Assembly: 120 Surpass
$10.46 Price reduced from $34.86 to
Clearance Sale! ⓘ
Screw Set (34): FT-120 (34) Screw Set (34): FT-120 (34)
5 out of 5 Customer Rating
Screw Set (34): FT-120 (34)
$25.44
Thrust Washer: BGX-3500 Thrust Washer: BGX-3500
4.8 out of 5 Customer Rating
Thrust Washer: BGX-3500
$6.49
Valve In Ex: 90-320 Valve In Ex: 90-320
3.6 out of 5 Customer Rating
Valve In Ex: 90-320
$36.85
Bearing R-1560X2ZZ Bearing R-1560X2ZZ
4 out of 5 Customer Rating
Bearing R-1560X2ZZ
$17.99
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
Cam Gear: Sirius 7 Cam Gear: Sirius 7
4 out of 5 Customer Rating
Cam Gear: Sirius 7
$19.29 Price reduced from $52.66 to
Clearance Sale! ⓘ
Connecting Rod: 37SZ-H Connecting Rod: 37SZ-H
3.6 out of 5 Customer Rating
Connecting Rod: 37SZ-H
$22.04
Crankshaft: 55AX Crankshaft: 55AX
4.4 out of 5 Customer Rating
Crankshaft: 55AX
$55.12
Cylinder Liner: 50SX-H Cylinder Liner: 50SX-H
4.8 out of 5 Customer Rating
Cylinder Liner: 50SX-H
$37.47
Exhaust Joint Nut: FS-120 Surpass Exhaust Joint Nut: FS-120 Surpass
4.4 out of 5 Customer Rating
Exhaust Joint Nut: FS-120 Surpass
$8.49
Mixture Control Screw: #2F and #2FB Mixture Control Screw: #2F and #2FB
5 out of 5 Customer Rating
Mixture Control Screw: #2F and #2FB
$9.44
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! ⓘ
Needle Assembly: #61B, 91HZ Needle Assembly: #61B, 91HZ
5 out of 5 Customer Rating
Needle Assembly: #61B, 91HZ
$14.73
Rear Housing: GT60 Rear Housing: GT60
4.4 out of 5 Customer Rating
Rear Housing: GT60
$87.18
Rocker Cover: 120 Surpass Rocker Cover: 120 Surpass
4.4 out of 5 Customer Rating
Rocker Cover: 120 Surpass
$14.73
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! ⓘ
Throttle Lever #2F #2FB Throttle Lever #2F #2FB
4.8 out of 5 Customer Rating
Throttle Lever #2F #2FB
$7.49
Throttle Arm Assembly WLA-2: GT55 Throttle Arm Assembly WLA-2: GT55
4 out of 5 Customer Rating
Throttle Arm Assembly WLA-2: GT55
$7.46
Head Gasket: 0.1, 0.15, R2101 Speed Head Gasket: 0.1, 0.15, R2101 Speed
4 out of 5 Customer Rating
Head Gasket: 0.1, 0.15, R2101 Speed
$10.94
Metering Needle Assembly 18TM Metering Needle Assembly 18TM
3.6 out of 5 Customer Rating
Metering Needle Assembly 18TM
$16.09
Piston Pin: 19XZ-B Speed Piston Pin: 19XZ-B Speed
3.6 out of 5 Customer Rating
Piston Pin: 19XZ-B Speed
$8.61
Screw Set (8): 15CV-A Screw Set (8): 15CV-A
5 out of 5 Customer Rating
Screw Set (8): 15CV-A
$9.44
Thermo Insulator 21J3 Thermo Insulator 21J3
4.6 out of 5 Customer Rating
Thermo Insulator 21J3
$19.14
Carburetor Reducer, 6.5mm: OS Speed B21 Pink Rhonda Drake Edition Carburetor Reducer, 6.5mm: OS Speed B21 Pink Rhonda Drake Edition
5 out of 5 Customer Rating
Carburetor Reducer, 6.5mm: OS Speed B21 Pink Rhonda Drake Edition
$22.11
Carburetor Body: #21C Carburetor Body: #21C
5 out of 5 Customer Rating
Carburetor Body: #21C
$24.00 Price reduced from $79.99 to
Clearance Sale! ⓘ
Crankshaft: 28XZ Crankshaft: 28XZ
4 out of 5 Customer Rating
Crankshaft: 28XZ
$131.09
Inner Head: 21XZ-R Speed Inner Head: 21XZ-R Speed
3.6 out of 5 Customer Rating
Inner Head: 21XZ-R Speed
$57.96
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