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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409-432 of 1,605 Results
Carburetor Gasket: GT60 Carburetor Gasket: GT60
5 out of 5 Customer Rating
Carburetor Gasket: GT60
$10.94
Master Connecting Rod Assembly: Sirius 7 Master Connecting Rod Assembly: Sirius 7
4.1 out of 5 Customer Rating
Master Connecting Rod Assembly: Sirius 7
$87.29
Needle Ext Cable: FR5 300 Needle Ext Cable: FR5 300
4.1 out of 5 Customer Rating
Needle Ext Cable: FR5 300
$8.49
Pilot Shaft: GT55 Pilot Shaft: GT55
4.1 out of 5 Customer Rating
Pilot Shaft: GT55
$29.56
Piston: 91HZ Piston: 91HZ
5 out of 5 Customer Rating
Piston: 91HZ
$91.99
Piston Pin: GF30 Piston Pin: GF30
4.7 out of 5 Customer Rating
Piston Pin: GF30
$6.33 Price reduced from $21.10 to
Clearance Sale! ⓘ
Piston Ring: GT15HZ Piston Ring: GT15HZ
3.9 out of 5 Customer Rating
Piston Ring: GT15HZ
$29.60
Piston Ring: 108FSR Piston Ring: 108FSR
4.1 out of 5 Customer Rating
Piston Ring: 108FSR
$29.60
Rocker Arm Assembly: FS-70 Ultimate Rocker Arm Assembly: FS-70 Ultimate
4.7 out of 5 Customer Rating
Rocker Arm Assembly: FS-70 Ultimate
$26.99
Rocker Arm: FS-40-48S Rocker Arm: FS-40-48S
5 out of 5 Customer Rating
Rocker Arm: FS-40-48S
$25.44
Standoff 5x12.7mm 1/2" (4): GT55 Standoff 5x12.7mm 1/2" (4): GT55
5 out of 5 Customer Rating
Standoff 5x12.7mm 1/2" (4): GT55
$29.49
Complete Carburetor Assembly: (61T2) O.S. FS-64V Complete Carburetor Assembly: (61T2) O.S. FS-64V
3.9 out of 5 Customer Rating
Complete Carburetor Assembly: (61T2) O.S. FS-64V
$153.99
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 Spring: 56 FS Valve Spring: 56 FS
5 out of 5 Customer Rating
Valve Spring: 56 FS
$6.49
Bearing L-1050ZZ Bearing L-1050ZZ
3.3 out of 5 Customer Rating
Bearing L-1050ZZ
$17.99
Main Shaft: 3805-1200 Main Shaft: 3805-1200
3.9 out of 5 Customer Rating
Main Shaft: 3805-1200
$8.99
Propeller Shaft Set: 3815-1000 Propeller Shaft Set: 3815-1000
5 out of 5 Customer Rating
Propeller Shaft Set: 3815-1000
$9.29 Price reduced from $30.99 to
Clearance Sale! ⓘ
80 Degree Exhaust Header: 155FS-a 80 Degree Exhaust Header: 155FS-a
5 out of 5 Customer Rating
80 Degree Exhaust Header: 155FS-a
$48.43
Air Bleed Screw: #10G Air Bleed Screw: #10G
4.5 out of 5 Customer Rating
Air Bleed Screw: #10G
$6.49
Carburetor Rotor: 37SZ-H Carburetor Rotor: 37SZ-H
5 out of 5 Customer Rating
Carburetor Rotor: 37SZ-H
$7.87 Price reduced from $26.24 to
Clearance Sale! ⓘ
102 Super Air Cleaner 102 Super Air Cleaner
5 out of 5 Customer Rating
102 Super Air Cleaner
$21.10
Carburetor Body: 21J2(B), 21XZ-B Speed Carburetor Body: 21J2(B), 21XZ-B Speed
5 out of 5 Customer Rating
Carburetor Body: 21J2(B), 21XZ-B Speed
$89.99
Crankcase: Speed R2101 Crankcase: Speed R2101
3.1 out of 5 Customer Rating
Crankcase: Speed R2101
$141.93
Crankcase: 21XZ-B Speed Spec II Crankcase: 21XZ-B Speed Spec II
4.1 out of 5 Customer Rating
Crankcase: 21XZ-B Speed Spec II
$157.70
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