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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1,077-1,100 of 1,605 Results
Cylinder Head Fixing Screws: 21TM Cylinder Head Fixing Screws: 21TM
4.8 out of 5 Customer Rating
Cylinder Head Fixing Screws: 21TM
$9.85
E-4051 Muffler: GT15HZ E-4051 Muffler: GT15HZ
5 out of 5 Customer Rating
E-4051 Muffler: GT15HZ
$97.70
Locknut 1/4-M5: FS-52 Surpass Locknut 1/4-M5: FS-52 Surpass
4 out of 5 Customer Rating
Locknut 1/4-M5: FS-52 Surpass
$22.26
Cam Assembly Screw Set: SIrius 7 Cam Assembly Screw Set: SIrius 7
4.8 out of 5 Customer Rating
Cam Assembly Screw Set: SIrius 7
$4.72 Price reduced from $15.76 to
Clearance Sale! ⓘ
Cam Cover: FS81 Alpha Cam Cover: FS81 Alpha
5 out of 5 Customer Rating
Cam Cover: FS81 Alpha
$10.82
Carburetor Body: #9B Carburetor Body: #9B
5 out of 5 Customer Rating
Carburetor Body: #9B
$54.64
Choke Arm Assembly: WLA-2, GT55 Choke Arm Assembly: WLA-2, GT55
5 out of 5 Customer Rating
Choke Arm Assembly: WLA-2, GT55
$7.46
Back Plate: 40-46 LA Back Plate: 40-46 LA
5 out of 5 Customer Rating
Back Plate: 40-46 LA
$11.80
Crankcase: FT-160 Crankcase: FT-160
5 out of 5 Customer Rating
Crankcase: FT-160
$174.34
Crankshaft: 55HZ Hyper Crankshaft: 55HZ Hyper
4.4 out of 5 Customer Rating
Crankshaft: 55HZ Hyper
$66.24
Crankshaft: FS120SEIII, FS120SE Crankshaft: FS120SEIII, FS120SE
4.8 out of 5 Customer Rating
Crankshaft: FS120SEIII, FS120SE
$102.52
Crank Pin Stop Screw: Sirius 7 Crank Pin Stop Screw: Sirius 7
4.4 out of 5 Customer Rating
Crank Pin Stop Screw: Sirius 7
$6.67 Price reduced from $22.24 to
Clearance Sale! ⓘ
Cylinder Head: FS110A Cylinder Head: FS110A
3.4 out of 5 Customer Rating
Cylinder Head: FS110A
$87.19
Exhaust Pipe Nut: FS-120 Surpass Exhaust Pipe Nut: FS-120 Surpass
5 out of 5 Customer Rating
Exhaust Pipe Nut: FS-120 Surpass
$6.49
Cylinder Head Gasket: 35AX Cylinder Head Gasket: 35AX
3.6 out of 5 Customer Rating
Cylinder Head Gasket: 35AX
$6.49
Mixture Control Valve 61H: GT15 Mixture Control Valve 61H: GT15
4.4 out of 5 Customer Rating
Mixture Control Valve 61H: GT15
$26.24
Muffler Screws 20-46 (2) Muffler Screws 20-46 (2)
3.2 out of 5 Customer Rating
Muffler Screws 20-46 (2)
$6.49
Needle: 15LA Needle: 15LA
3.4 out of 5 Customer Rating
Needle: 15LA
$9.85
Needle 61H: GT15 Needle 61H: GT15
5 out of 5 Customer Rating
Needle 61H: GT15
$13.78
Needle: #60B Needle: #60B
5 out of 5 Customer Rating
Needle: #60B
$14.73
Pushrod Cover: 120 Surpass Pushrod Cover: 120 Surpass
5 out of 5 Customer Rating
Pushrod Cover: 120 Surpass
$10.90
Piston Ring: FT-120 240 Piston Ring: FT-120 240
4.4 out of 5 Customer Rating
Piston Ring: FT-120 240
$29.60
Piston Ring: GT33 Piston Ring: GT33
4.4 out of 5 Customer Rating
Piston Ring: GT33
$25.44
Spark Plug 1 4-32 RCE: GF30 Spark Plug 1 4-32 RCE: GF30
4.4 out of 5 Customer Rating
Spark Plug 1 4-32 RCE: GF30
$24.44
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