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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1,105-1,128 of 1,755 Results
Lock Cone: 40P/60GP Lock Cone: 40P/60GP
4.7 out of 5 Customer Rating
Lock Cone: 40P/60GP
$26.24
Mixture Control Valve Spring Mixture Control Valve Spring
5 out of 5 Customer Rating
Mixture Control Valve Spring
$6.49
Silencer Body F-5030: FS81 Alpha Silencer Body F-5030: FS81 Alpha
5 out of 5 Customer Rating
Silencer Body F-5030: FS81 Alpha
$48.51
Silencer E-4040: GT15 75AX 95AX Silencer E-4040: GT15 75AX 95AX
3.3 out of 5 Customer Rating
Silencer E-4040: GT15 75AX 95AX
$51.64
Screw Assembly: F-5030 FS81 Alpha Screw Assembly: F-5030 FS81 Alpha
4.3 out of 5 Customer Rating
Screw Assembly: F-5030 FS81 Alpha
$9.85
Pushrod Cover: 56FS-a Pushrod Cover: 56FS-a
5 out of 5 Customer Rating
Pushrod Cover: 56FS-a
$8.43
Prop Locknut FF-240 320 Prop Locknut FF-240 320
5 out of 5 Customer Rating
Prop Locknut FF-240 320
$41.12
Ratchet Spring #7H #7D #2K Ratchet Spring #7H #7D #2K
4.1 out of 5 Customer Rating
Ratchet Spring #7H #7D #2K
$6.49
Rocker Arm: FS-62V Rocker Arm: FS-62V
4.1 out of 5 Customer Rating
Rocker Arm: FS-62V
$7.63 Price reduced from $25.44 to
Clearance Sale! ⓘ
Intake Valve: 200 Surpass Intake Valve: 200 Surpass
3.7 out of 5 Customer Rating
Intake Valve: 200 Surpass
$13.26 Price reduced from $44.22 to
Clearance Sale! ⓘ
Velocity Stack: GF40 Velocity Stack: GF40
5 out of 5 Customer Rating
Velocity Stack: GF40
$25.44
Lock Washer 3mm Lock Washer 3mm
3.7 out of 5 Customer Rating
Lock Washer 3mm
$19.14
Crankshaft: FS155A-P Crankshaft: FS155A-P
4.1 out of 5 Customer Rating
Crankshaft: FS155A-P
$109.12
Crank Pin Stop Screw: GT22 Crank Pin Stop Screw: GT22
4.1 out of 5 Customer Rating
Crank Pin Stop Screw: GT22
$10.94
Cylinder Head: GF30 Cylinder Head: GF30
3.3 out of 5 Customer Rating
Cylinder Head: GF30
$135.55
Gasket Head, .1mm: 105HZ Gasket Head, .1mm: 105HZ
5 out of 5 Customer Rating
Gasket Head, .1mm: 105HZ
$7.46
Intake Manifold: FT-120 160 Intake Manifold: FT-120 160
3.9 out of 5 Customer Rating
Intake Manifold: FT-120 160
$44.22
Intake Pipe Assembly: FS-91-P Intake Pipe Assembly: FS-91-P
3.3 out of 5 Customer Rating
Intake Pipe Assembly: FS-91-P
$29.49
Locknut Set Spinner: FS-52 Locknut Set Spinner: FS-52
4.7 out of 5 Customer Rating
Locknut Set Spinner: FS-52
$22.26
Muffler Assembly Screw #842 Muffler Assembly Screw #842
4.1 out of 5 Customer Rating
Muffler Assembly Screw #842
$8.43
Piston Pin Retainer: GT55 (2) Piston Pin Retainer: GT55 (2)
4.5 out of 5 Customer Rating
Piston Pin Retainer: GT55 (2)
$7.46
Piston Pin: 108FSR Piston Pin: 108FSR
4.7 out of 5 Customer Rating
Piston Pin: 108FSR
$14.75
Prop Locknut :FS40- 48Surpass Prop Locknut :FS40- 48Surpass
3.3 out of 5 Customer Rating
Prop Locknut :FS40- 48Surpass
$17.08
Throttle Stop Screw #40D Throttle Stop Screw #40D
5 out of 5 Customer Rating
Throttle Stop Screw #40D
$6.49
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