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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49-72 of 1,605 Results
Prop Nut: 21XM Prop Nut: 21XM
3.9 out of 5 Customer Rating
Prop Nut: 21XM
$6.49
Arm Shaft Assembly: 21XM Arm Shaft Assembly: 21XM
3.9 out of 5 Customer Rating
Arm Shaft Assembly: 21XM
$13.75
Front Bearing: 11PS Front Bearing: 11PS
3.1 out of 5 Customer Rating
Front Bearing: 11PS
$22.04
Carburetor Retainer: 30VG Carburetor Retainer: 30VG
5 out of 5 Customer Rating
Carburetor Retainer: 30VG
$13.78
Cylinder Rebuild Kit: O.S. SPEED R21 EURO Cylinder Rebuild Kit: O.S. SPEED R21 EURO
4.7 out of 5 Customer Rating
Cylinder Rebuild Kit: O.S. SPEED R21 EURO
$251.47
Flex Shaft Assembl:y 21XM Flex Shaft Assembl:y 21XM
5 out of 5 Customer Rating
Flex Shaft Assembl:y 21XM
$29.46
Muffler Assembly Screws #E-2050 (4) Muffler Assembly Screws #E-2050 (4)
4.4 out of 5 Customer Rating
Muffler Assembly Screws #E-2050 (4)
$7.49
Crankcase: 18CV-R Crankcase: 18CV-R
3.4 out of 5 Customer Rating
Crankcase: 18CV-R
$52.52
Cylinder Head: 21XM V2 Outboard Marine Cylinder Head: 21XM V2 Outboard Marine
4 out of 5 Customer Rating
Cylinder Head: 21XM V2 Outboard Marine
$91.34
Needle Assembly 21-120 Needle Assembly 21-120
5 out of 5 Customer Rating
Needle Assembly 21-120
$22.04
Inner Head: 21XZ-R Inner Head: 21XZ-R
5 out of 5 Customer Rating
Inner Head: 21XZ-R
$52.69
Cylinder Head: 21XZ-M Inboard Marine Cylinder Head: 21XZ-M Inboard Marine
4.1 out of 5 Customer Rating
Cylinder Head: 21XZ-M Inboard Marine
$72.99
Gasket Cover: 21XM V2 Outboard Marine Gasket Cover: 21XM V2 Outboard Marine
5 out of 5 Customer Rating
Gasket Cover: 21XM V2 Outboard Marine
$6.49
Carburetor Body: #40A Carburetor Body: #40A
5 out of 5 Customer Rating
Carburetor Body: #40A
$47.99
Cavitation Plt: 21XM Cavitation Plt: 21XM
4.2 out of 5 Customer Rating
Cavitation Plt: 21XM
$22.24
Lower Unit: 21XM Lower Unit: 21XM
4.8 out of 5 Customer Rating
Lower Unit: 21XM
$100.94
Rear Board Unit Fixing Screw: 21XM V2 Outboard Rear Board Unit Fixing Screw: 21XM V2 Outboard
5 out of 5 Customer Rating
Rear Board Unit Fixing Screw: 21XM V2 Outboard
$10.86
Crankshaft: 21XM V2 Outboard Marine Crankshaft: 21XM V2 Outboard Marine
5 out of 5 Customer Rating
Crankshaft: 21XM V2 Outboard Marine
$130.94
Prop Shaft: 21XM Prop Shaft: 21XM
5 out of 5 Customer Rating
Prop Shaft: 21XM
$57.74
Side Plate: 21XM Side Plate: 21XM
3.3 out of 5 Customer Rating
Side Plate: 21XM
$22.24
Cylinder & Piston Assembly: 21XM V2 Outboard Marine Cylinder & Piston Assembly: 21XM V2 Outboard Marine
4.1 out of 5 Customer Rating
Cylinder & Piston Assembly: 21XM V2 Outboard Marine
$155.31
Gasket Head: 21XM V2 Outboard Marine Gasket Head: 21XM V2 Outboard Marine
4.7 out of 5 Customer Rating
Gasket Head: 21XM V2 Outboard Marine
$6.49
Flywheel Nut: 21XM Flywheel Nut: 21XM
4.4 out of 5 Customer Rating
Flywheel Nut: 21XM
$2.55 Price reduced from $8.49 to
Clearance Sale! ⓘ
Flex Shaft Housing: 21XM Flex Shaft Housing: 21XM
3.6 out of 5 Customer Rating
Flex Shaft Housing: 21XM
$10.86
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