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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1,705-1,728 of 1,812 Results
Thrust Washer: 21-32 Thrust Washer: 21-32
3.3 out of 5 Customer Rating
Thrust Washer: 21-32
$6.49
Pushrod: FR5 Pushrod: FR5
5 out of 5 Customer Rating
Pushrod: FR5
$10.86
Pushrod: FS72 Alpha Pushrod: FS72 Alpha
4.5 out of 5 Customer Rating
Pushrod: FS72 Alpha
$9.85
Rear Adapter: 15CV-X Rear Adapter: 15CV-X
3.3 out of 5 Customer Rating
Rear Adapter: 15CV-X
$16.09
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
Valve Intake: FS-91 Surpass Valve Intake: FS-91 Surpass
4.7 out of 5 Customer Rating
Valve Intake: FS-91 Surpass
$34.86
Valve Intake: FS-120 Surpass Valve Intake: FS-120 Surpass
3.9 out of 5 Customer Rating
Valve Intake: FS-120 Surpass
$37.80
Rocker Arm Assembly: 200 Surpass Rocker Arm Assembly: 200 Surpass
4.1 out of 5 Customer Rating
Rocker Arm Assembly: 200 Surpass
$36.85
Regulator Seat: 61E-R Regulator Seat: 61E-R
4.1 out of 5 Customer Rating
Regulator Seat: 61E-R
$11.87
Rocker Arm Assembly: 120 300 Rocker Arm Assembly: 120 300
5 out of 5 Customer Rating
Rocker Arm Assembly: 120 300
$32.56
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
Rocker Arm Support Assembly: FS-40-48S Rocker Arm Support Assembly: FS-40-48S
3.7 out of 5 Customer Rating
Rocker Arm Support Assembly: FS-40-48S
$11.72
Rocker Support: FS110A Rocker Support: FS110A
4.1 out of 5 Customer Rating
Rocker Support: FS110A
$29.60
Camshaft Cover Camshaft Cover
4.7 out of 5 Customer Rating
Camshaft Cover
$11.80
Rocker Cover,, Black: FSa-72II Rocker Cover,, Black: FSa-72II
4.1 out of 5 Customer Rating
Rocker Cover,, Black: FSa-72II
$25.51
Rocker Cover: FT-160 Rocker Cover: FT-160
4.1 out of 5 Customer Rating
Rocker Cover: FT-160
$22.04
Rotor Spring #9B Rotor Spring #9B
5 out of 5 Customer Rating
Rotor Spring #9B
$6.49
Screw Set (8): 15LA Screw Set (8): 15LA
3.9 out of 5 Customer Rating
Screw Set (8): 15LA
$8.46
Screw Set (8): 10LA (8) Screw Set (8): 10LA (8)
3.3 out of 5 Customer Rating
Screw Set (8): 10LA (8)
$8.49
Screw Set (8): 37SZ-H Screw Set (8): 37SZ-H
5 out of 5 Customer Rating
Screw Set (8): 37SZ-H
$9.85
Cap Screw 4x20mm (10): GT55 Cap Screw 4x20mm (10): GT55
3.9 out of 5 Customer Rating
Cap Screw 4x20mm (10): GT55
$11.80
Screw Set (12): FS-120 Surpass Screw Set (12): FS-120 Surpass
4.7 out of 5 Customer Rating
Screw Set (12): FS-120 Surpass
$17.08
Exhaust Seal O-Ring (2) Exhaust Seal O-Ring (2)
4.7 out of 5 Customer Rating
Exhaust Seal O-Ring (2)
$13.78
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