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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429-452 of 1,605 Results
Ratchet Spring #7H #7D #2K Ratchet Spring #7H #7D #2K
4.1 out of 5 Customer Rating
Ratchet Spring #7H #7D #2K
$6.49
Exhaust Valve Assembly: 56 FS Exhaust Valve Assembly: 56 FS
3.9 out of 5 Customer Rating
Exhaust Valve Assembly: 56 FS
$5.72 Price reduced from $19.05 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! ⓘ
Lock Washer 3mm Lock Washer 3mm
3.7 out of 5 Customer Rating
Lock Washer 3mm
$19.14
Cover Plate: FSa-56II Cover Plate: FSa-56II
4.9 out of 5 Customer Rating
Cover Plate: FSa-56II
$19.31
Crankcase: 50SX-H Crankcase: 50SX-H
3.1 out of 5 Customer Rating
Crankcase: 50SX-H
$67.24
Crankshaft: 75AX Crankshaft: 75AX
3.7 out of 5 Customer Rating
Crankshaft: 75AX
$66.04
Crank Pin Stop Screw: GT22 Crank Pin Stop Screw: GT22
4.1 out of 5 Customer Rating
Crank Pin Stop Screw: GT22
$10.94
Gasket Set: 120AX Gasket Set: 120AX
4.1 out of 5 Customer Rating
Gasket Set: 120AX
$10.94
Gasket: #3A2CBD Gasket: #3A2CBD
5 out of 5 Customer Rating
Gasket: #3A2CBD
$6.49
Gasket Head, .1mm: 105HZ Gasket Head, .1mm: 105HZ
5 out of 5 Customer Rating
Gasket Head, .1mm: 105HZ
$7.46
Head Gasket: 200 Surpass Head Gasket: 200 Surpass
4.1 out of 5 Customer Rating
Head Gasket: 200 Surpass
$6.49
Locknut Set Spinner: FS-52 Locknut Set Spinner: FS-52
4.7 out of 5 Customer Rating
Locknut Set Spinner: FS-52
$22.26
Pushrod: 200 Surpass Pushrod: 200 Surpass
3.3 out of 5 Customer Rating
Pushrod: 200 Surpass
$10.86
Piston Pin Retainer: GT55 (2) Piston Pin Retainer: GT55 (2)
4.5 out of 5 Customer Rating
Piston Pin Retainer: GT55 (2)
$2.24 Price reduced from $7.46 to
Clearance Sale! ⓘ
Piston Pin: 108FSR Piston Pin: 108FSR
4.7 out of 5 Customer Rating
Piston Pin: 108FSR
$14.75
Piston Pin: 40-46 Piston Pin: 40-46
5 out of 5 Customer Rating
Piston Pin: 40-46
$9.46
Prop Locknut :FS40- 48Surpass Prop Locknut :FS40- 48Surpass
3.3 out of 5 Customer Rating
Prop Locknut :FS40- 48Surpass
$17.08
Tappet Screw: FS-20 48 Tappet Screw: FS-20 48
5 out of 5 Customer Rating
Tappet Screw: FS-20 48
$8.49
Throttle Stop Screw #40D Throttle Stop Screw #40D
5 out of 5 Customer Rating
Throttle Stop Screw #40D
$6.49
Carburetor #10G: 15LA Carburetor #10G: 15LA
5 out of 5 Customer Rating
Carburetor #10G: 15LA
$25.29
Muffler Extension: #762 Muffler Extension: #762
3.3 out of 5 Customer Rating
Muffler Extension: #762
$16.09
Intake Manifold Assembly B: IL-300 Intake Manifold Assembly B: IL-300
5 out of 5 Customer Rating
Intake Manifold Assembly B: IL-300
$22.37
Rear Bearing: 40-50 Rear Bearing: 40-50
4.1 out of 5 Customer Rating
Rear Bearing: 40-50
$26.34
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