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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1,489-1,512 of 1,755 Results
Cylinder Head with Valve: FS-40 Surpass Cylinder Head with Valve: FS-40 Surpass
5 out of 5 Customer Rating
Cylinder Head with Valve: FS-40 Surpass
$87.39
Cylinder Head: GT33 Cylinder Head: GT33
3.3 out of 5 Customer Rating
Cylinder Head: GT33
$57.78
Exhaust Pipe Nut: F40-300 Exhaust Pipe Nut: F40-300
3.9 out of 5 Customer Rating
Exhaust Pipe Nut: F40-300
$6.49
Gasket Set: 46AX Gasket Set: 46AX
3.1 out of 5 Customer Rating
Gasket Set: 46AX
$11.80
Gasket Carb IP: #10, FR5 Gasket Carb IP: #10, FR5
4.5 out of 5 Customer Rating
Gasket Carb IP: #10, FR5
$6.49
Cover Plate Gasket: 35AX Cover Plate Gasket: 35AX
3.7 out of 5 Customer Rating
Cover Plate Gasket: 35AX
$10.94
Gasket Carburetor: 120-240 Gasket Carburetor: 120-240
5 out of 5 Customer Rating
Gasket Carburetor: 120-240
$6.49
Piston Pin: 55HZ Hyper Piston Pin: 55HZ Hyper
4.7 out of 5 Customer Rating
Piston Pin: 55HZ Hyper
$10.94
Piston Pin: FS-120 Piston Pin: FS-120
3.9 out of 5 Customer Rating
Piston Pin: FS-120
$14.73
Prop Nut: 61-120 Prop Nut: 61-120
3.9 out of 5 Customer Rating
Prop Nut: 61-120
$6.49
Valve Spring Retainer: GF40 Valve Spring Retainer: GF40
4.1 out of 5 Customer Rating
Valve Spring Retainer: GF40
$13.83
Cover Plate: 15CV-A Cover Plate: 15CV-A
5 out of 5 Customer Rating
Cover Plate: 15CV-A
$10.99
Cover Plate: GF40 Cover Plate: GF40
5 out of 5 Customer Rating
Cover Plate: GF40
$10.08 Price reduced from $33.61 to
Clearance Sale! ⓘ
Cover Plate: FS-200S-P Cover Plate: FS-200S-P
4.1 out of 5 Customer Rating
Cover Plate: FS-200S-P
$25.44
Exhaust Pipe Nut: FS-120 III Exhaust Pipe Nut: FS-120 III
3.9 out of 5 Customer Rating
Exhaust Pipe Nut: FS-120 III
$6.49
Mixture Control Valve 80T: Sirius 7 Mixture Control Valve 80T: Sirius 7
3.3 out of 5 Customer Rating
Mixture Control Valve 80T: Sirius 7
$6.33 Price reduced from $21.12 to
Clearance Sale! ⓘ
Piston Pin: FS-91 Surpass Piston Pin: FS-91 Surpass
3.3 out of 5 Customer Rating
Piston Pin: FS-91 Surpass
$10.86
Piston Ring: 160FX Piston Ring: 160FX
4.3 out of 5 Customer Rating
Piston Ring: 160FX
$32.56
Piston Ring: GT22 Piston Ring: GT22
3.3 out of 5 Customer Rating
Piston Ring: GT22
$25.44
Reed Valve Assembly: GT33 Reed Valve Assembly: GT33
5 out of 5 Customer Rating
Reed Valve Assembly: GT33
$26.99
Reduction Gear: FR5 Reduction Gear: FR5
5 out of 5 Customer Rating
Reduction Gear: FR5
$81.96
Rocker Arm Retainer: FS-20-240 Rocker Arm Retainer: FS-20-240
4.7 out of 5 Customer Rating
Rocker Arm Retainer: FS-20-240
$6.49
Camshaft Cover Camshaft Cover
4.7 out of 5 Customer Rating
Camshaft Cover
$11.80
Valve Throttle WLA-2: GT55 Valve Throttle WLA-2: GT55
4.1 out of 5 Customer Rating
Valve Throttle WLA-2: GT55
$15.76
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