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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481-528 of 1,758 Results
Cover Plate: R21 Cover Plate: R21
4 out of 5 Customer Rating
Cover Plate: R21
$6.61 Price reduced from $22.04 to
Clearance Sale! ⓘ
Crankshaft: 18TM Crankshaft: 18TM
5 out of 5 Customer Rating
Crankshaft: 18TM
$55.14
Crankshaft: 21XR-B Version II Crankshaft: 21XR-B Version II
4.8 out of 5 Customer Rating
Crankshaft: 21XR-B Version II
$18.83 Price reduced from $62.78 to
Clearance Sale! ⓘ
Outer Head: R2101 Speed Outer Head: R2101 Speed
3.4 out of 5 Customer Rating
Outer Head: R2101 Speed
$102.35
Universal Nipple #12 Universal Nipple #12
5 out of 5 Customer Rating
Universal Nipple #12
$6.49
Needle Holder 12F-B: 12XZ Speed Spec 3 Needle Holder 12F-B: 12XZ Speed Spec 3
5 out of 5 Customer Rating
Needle Holder 12F-B: 12XZ Speed Spec 3
$19.14
Spinner Nut: 10FP, FSR Spinner Nut: 10FP, FSR
4.1 out of 5 Customer Rating
Spinner Nut: 10FP, FSR
$9.49
Rear Bearing: GT55 Rear Bearing: GT55
3.7 out of 5 Customer Rating
Rear Bearing: GT55
$6.29 Price reduced from $20.99 to
Clearance Sale! ⓘ
Camshaft: FS-40, 48 Surpass Camshaft: FS-40, 48 Surpass
3.7 out of 5 Customer Rating
Camshaft: FS-40, 48 Surpass
$41.94
Connecting Rod: 95AX Connecting Rod: 95AX
3.7 out of 5 Customer Rating
Connecting Rod: 95AX
$29.60
Crankcase: 120 Surpass Crankcase: 120 Surpass
3.7 out of 5 Customer Rating
Crankcase: 120 Surpass
$162.87
Crankshaft: FS-95V Crankshaft: FS-95V
3.9 out of 5 Customer Rating
Crankshaft: FS-95V
$102.45
Drive Washer: FS-48 Surpass Drive Washer: FS-48 Surpass
5 out of 5 Customer Rating
Drive Washer: FS-48 Surpass
$13.75
Exhaust Pipe Assembly: FS81 Alpha Exhaust Pipe Assembly: FS81 Alpha
4.7 out of 5 Customer Rating
Exhaust Pipe Assembly: FS81 Alpha
$19.14
Intake Pipe Assembly: FS-120 SP Intake Pipe Assembly: FS-120 SP
3.3 out of 5 Customer Rating
Intake Pipe Assembly: FS-120 SP
$36.99
Silencer Assembly Screw: 56 FS Silencer Assembly Screw: 56 FS
4.7 out of 5 Customer Rating
Silencer Assembly Screw: 56 FS
$8.43
Mufler Body F6020: FS155A-P Mufler Body F6020: FS155A-P
3.9 out of 5 Customer Rating
Mufler Body F6020: FS155A-P
$70.40
Muffler Assembly Screw #843 #892 Muffler Assembly Screw #843 #892
3.3 out of 5 Customer Rating
Muffler Assembly Screw #843 #892
$8.43
O-Ring Muffler Gasket F6020: FS155A-P O-Ring Muffler Gasket F6020: FS155A-P
5 out of 5 Customer Rating
O-Ring Muffler Gasket F6020: FS155A-P
$8.49
Pushrod: GF30 Pushrod: GF30
4.1 out of 5 Customer Rating
Pushrod: GF30
$7.87 Price reduced from $26.24 to
Clearance Sale! ⓘ
Needle Assembly #7M #7L Needle Assembly #7M #7L
5 out of 5 Customer Rating
Needle Assembly #7M #7L
$22.04
Rocker Cover Gasket: 200 Surpass Rocker Cover Gasket: 200 Surpass
5 out of 5 Customer Rating
Rocker Cover Gasket: 200 Surpass
$6.49
Woodruff Key: 30Wankel Woodruff Key: 30Wankel
3.9 out of 5 Customer Rating
Woodruff Key: 30Wankel
$6.49
Main Shaft: 3820-960 Main Shaft: 3820-960
3.5 out of 5 Customer Rating
Main Shaft: 3820-960
$8.99
Carburetor #61A: 75AX Carburetor #61A: 75AX
4.5 out of 5 Customer Rating
Carburetor #61A: 75AX
$97.80
Mid Bearing: 120-240 Mid Bearing: 120-240
5 out of 5 Customer Rating
Mid Bearing: 120-240
$32.99
Plug Cable: Sirius 7 Plug Cable: Sirius 7
3.1 out of 5 Customer Rating
Plug Cable: Sirius 7
$10.94
Carburetor Body: #20H Carburetor Body: #20H
3.7 out of 5 Customer Rating
Carburetor Body: #20H
$19.14
Carburetor Body: #120AX Carburetor Body: #120AX
4.5 out of 5 Customer Rating
Carburetor Body: #120AX
$14.55 Price reduced from $48.51 to
Clearance Sale! ⓘ
Carburetor Insert: #9B Carburetor Insert: #9B
4.1 out of 5 Customer Rating
Carburetor Insert: #9B
$7.99
Choke Valve: 120-300 Choke Valve: 120-300
4.7 out of 5 Customer Rating
Choke Valve: 120-300
$31.52
Connecting Rod: 35-40FP, 40 LA Connecting Rod: 35-40FP, 40 LA
4.7 out of 5 Customer Rating
Connecting Rod: 35-40FP, 40 LA
$21.10
Cover Plate: FS155A-P Cover Plate: FS155A-P
5 out of 5 Customer Rating
Cover Plate: FS155A-P
$6.61 Price reduced from $22.04 to
Clearance Sale! ⓘ
Crankshaft: 15LA Crankshaft: 15LA
5 out of 5 Customer Rating
Crankshaft: 15LA
$23.22
Crankshaft: 120AX Crankshaft: 120AX
4.1 out of 5 Customer Rating
Crankshaft: 120AX
$80.37
Cylinder Head: FT-160 Cylinder Head: FT-160
4.5 out of 5 Customer Rating
Cylinder Head: FT-160
$87.19
Cylinder Head: FF-320 Cylinder Head: FF-320
5 out of 5 Customer Rating
Cylinder Head: FF-320
$76.85
Cylinder Head & Valve: FT-300 Cylinder Head & Valve: FT-300
4.5 out of 5 Customer Rating
Cylinder Head & Valve: FT-300
$190.99
Intake Manifold Set: Sirius 7 Intake Manifold Set: Sirius 7
3.9 out of 5 Customer Rating
Intake Manifold Set: Sirius 7
$8.84 Price reduced from $29.48 to
Clearance Sale! ⓘ
Needle Holder #7H #7M #7L Needle Holder #7H #7M #7L
4.1 out of 5 Customer Rating
Needle Holder #7H #7M #7L
$11.80
O-Ring PRC: 120Surpass O-Ring PRC: 120Surpass
4.7 out of 5 Customer Rating
O-Ring PRC: 120Surpass
$6.49
Piston Pin Retainer: GT33 Piston Pin Retainer: GT33
5 out of 5 Customer Rating
Piston Pin Retainer: GT33
$7.46
Piston Ring: FS-62V Piston Ring: FS-62V
4.7 out of 5 Customer Rating
Piston Ring: FS-62V
$10.42 Price reduced from $34.76 to
Clearance Sale! ⓘ
Rocker Cover, Black: FSa-56II Rocker Cover, Black: FSa-56II
3.3 out of 5 Customer Rating
Rocker Cover, Black: FSa-56II
$5.76 Price reduced from $19.22 to
Clearance Sale! ⓘ
Screw Set (12): 108FSR Screw Set (12): 108FSR
4.3 out of 5 Customer Rating
Screw Set (12): 108FSR
$17.16
Standoff 5x44.5mm 1-3/4" (4): GT55 Standoff 5x44.5mm 1-3/4" (4): GT55
4.7 out of 5 Customer Rating
Standoff 5x44.5mm 1-3/4" (4): GT55
$44.10
Valve: FS-62V Valve: FS-62V
3.3 out of 5 Customer Rating
Valve: FS-62V
$21.17
Thrust Washer Rear 30Wankel Thrust Washer Rear 30Wankel
5 out of 5 Customer Rating
Thrust Washer Rear 30Wankel
$6.49
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