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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606-653 of 1,758 Results
Water Nipple: #2 Water Nipple: #2
5 out of 5 Customer Rating
Water Nipple: #2
$6.49
Valve Assembly: New FT-160 Valve Assembly: New FT-160
5 out of 5 Customer Rating
Valve Assembly: New FT-160
$36.85
Piston Pin: 25F FP Piston Pin: 25F FP
3.3 out of 5 Customer Rating
Piston Pin: 25F FP
$9.85
Drive Washer: FS-48 Surpass Drive Washer: FS-48 Surpass
5 out of 5 Customer Rating
Drive Washer: FS-48 Surpass
$13.75
Locknut Set 3/8M5S Locknut Set 3/8M5S
3.9 out of 5 Customer Rating
Locknut Set 3/8M5S
$26.24
Needle Valve Assembly 12F2-B: Speed T1202 Needle Valve Assembly 12F2-B: Speed T1202
3.9 out of 5 Customer Rating
Needle Valve Assembly 12F2-B: Speed T1202
$8.19 Price reduced from $27.29 to
Clearance Sale! ⓘ
Camshaft: FS-120 II Camshaft: FS-120 II
5 out of 5 Customer Rating
Camshaft: FS-120 II
$66.15
Cylinder Head: .35AX Cylinder Head: .35AX
5 out of 5 Customer Rating
Cylinder Head: .35AX
$22.04
Air Bleed Screw: #40D Air Bleed Screw: #40D
3.4 out of 5 Customer Rating
Air Bleed Screw: #40D
$6.49
Throttle Lever: 120Surpass Throttle Lever: 120Surpass
3.6 out of 5 Customer Rating
Throttle Lever: 120Surpass
$6.49
Screw Set (8): 15CV-A Screw Set (8): 15CV-A
5 out of 5 Customer Rating
Screw Set (8): 15CV-A
$9.44
Screw Set 12 (8) Screw Set 12 (8)
4.7 out of 5 Customer Rating
Screw Set 12 (8)
$7.46
Type F Glow Plug Medium: Four Stroke Type F Glow Plug Medium: Four Stroke
5 out of 5 Customer Rating
Type F Glow Plug Medium: Four Stroke
$13.99
Gasket Carburetor: 61-108 Gasket Carburetor: 61-108
4.1 out of 5 Customer Rating
Gasket Carburetor: 61-108
$6.49
Throttle Lever #1A-#3A Throttle Lever #1A-#3A
4.2 out of 5 Customer Rating
Throttle Lever #1A-#3A
$6.49
Speed P3 Gold Ultra Hot Plug Speed P3 Gold Ultra Hot Plug
5 out of 5 Customer Rating
Speed P3 Gold Ultra Hot Plug
$16.99
Bubbleless Clunk Bubbleless Clunk
3.3 out of 5 Customer Rating
Bubbleless Clunk
$21.04
Crankcase: GF40 Crankcase: GF40
4.1 out of 5 Customer Rating
Crankcase: GF40
$40.69 Price reduced from $135.64 to
Clearance Sale! ⓘ
Needle Valve Assembly #11H #11HB Needle Valve Assembly #11H #11HB
3.6 out of 5 Customer Rating
Needle Valve Assembly #11H #11HB
$27.29
Screw Set (34): FT-120 (34) Screw Set (34): FT-120 (34)
5 out of 5 Customer Rating
Screw Set (34): FT-120 (34)
$25.44
Head Gasket: 21TM Head Gasket: 21TM
4 out of 5 Customer Rating
Head Gasket: 21TM
$9.74
Ball Link #3 20K: 21VZ-R Ball Link #3 20K: 21VZ-R
5 out of 5 Customer Rating
Ball Link #3 20K: 21VZ-R
$5.15 Price reduced from $17.16 to
Clearance Sale! ⓘ
Muffler Extension: #762 Muffler Extension: #762
3.3 out of 5 Customer Rating
Muffler Extension: #762
$16.09
LC4 T-Maxx Revo Plug Medium LC4 T-Maxx Revo Plug Medium
4 out of 5 Customer Rating
LC4 T-Maxx Revo Plug Medium
$11.99
Carburetor Body: 21J3 Carburetor Body: 21J3
3.7 out of 5 Customer Rating
Carburetor Body: 21J3
$26.16 Price reduced from $87.19 to
Clearance Sale! ⓘ
LC3 T-Maxx Revo Glow Plug Hot LC3 T-Maxx Revo Glow Plug Hot
4.2 out of 5 Customer Rating
LC3 T-Maxx Revo Glow Plug Hot
$11.99
Crankshaft: GT22 Crankshaft: GT22
4.4 out of 5 Customer Rating
Crankshaft: GT22
$37.67 Price reduced from $125.57 to
Clearance Sale! ⓘ
Silencer E3080: 35AX Silencer E3080: 35AX
5 out of 5 Customer Rating
Silencer E3080: 35AX
$34.86
Crankcase: 21TM Crankcase: 21TM
4.2 out of 5 Customer Rating
Crankcase: 21TM
$29.31 Price reduced from $97.72 to
Clearance Sale! ⓘ
Front Bearing: 21XZ-B Front Bearing: 21XZ-B
5 out of 5 Customer Rating
Front Bearing: 21XZ-B
$30.44
Cap Screw Set M2.6x7: 18TZ Cap Screw Set M2.6x7: 18TZ
4.7 out of 5 Customer Rating
Cap Screw Set M2.6x7: 18TZ
$9.85
Rear Adapter Fixing Screws (10): 21TM Rear Adapter Fixing Screws (10): 21TM
5 out of 5 Customer Rating
Rear Adapter Fixing Screws (10): 21TM
$7.46
PCV Valve Set: GF40 PCV Valve Set: GF40
5 out of 5 Customer Rating
PCV Valve Set: GF40
$4.45 Price reduced from $14.84 to
Clearance Sale! ⓘ
Glow G5 Gas Plug: GGT15 Glow G5 Gas Plug: GGT15
3.7 out of 5 Customer Rating
Glow G5 Gas Plug: GGT15
$17.99
Cylinder: GF40 Cylinder: GF40
5 out of 5 Customer Rating
Cylinder: GF40
$44.10 Price reduced from $147.00 to
Clearance Sale! ⓘ
Connecting Rod: Speed B2101, B2102 Connecting Rod: Speed B2101, B2102
4 out of 5 Customer Rating
Connecting Rod: Speed B2101, B2102
$52.58
Cylinder Head: GF40 Cylinder Head: GF40
3.7 out of 5 Customer Rating
Cylinder Head: GF40
$48.90 Price reduced from $163.01 to
Clearance Sale! ⓘ
Motor Mount: 25FX, 32SX, 35AX Motor Mount: 25FX, 32SX, 35AX
3.7 out of 5 Customer Rating
Motor Mount: 25FX, 32SX, 35AX
$25.29
Muffler Extension: 120AX Muffler Extension: 120AX
3.2 out of 5 Customer Rating
Muffler Extension: 120AX
$26.24
Inner Head: speed 21XZ-B Spec III Inner Head: speed 21XZ-B Spec III
3.3 out of 5 Customer Rating
Inner Head: speed 21XZ-B Spec III
$15.81 Price reduced from $52.69 to
Clearance Sale! ⓘ
Spinner Nut: 20-48 Spinner Nut: 20-48
4 out of 5 Customer Rating
Spinner Nut: 20-48
$11.91
O-Ring: 21TM O-Ring: 21TM
5 out of 5 Customer Rating
O-Ring: 21TM
$9.74
Spinner Nut: 10FP, FSR Spinner Nut: 10FP, FSR
4.1 out of 5 Customer Rating
Spinner Nut: 10FP, FSR
$9.49
Gasket Set: 91FX Gasket Set: 91FX
5 out of 5 Customer Rating
Gasket Set: 91FX
$8.43
Prop Washer: 40-61 Prop Washer: 40-61
3.7 out of 5 Customer Rating
Prop Washer: 40-61
$6.49
#7 Glow Plug, Medium Hot Air #7 Glow Plug, Medium Hot Air
5 out of 5 Customer Rating
#7 Glow Plug, Medium Hot Air
$11.99
T-2090SC Tune Pipe Set: 21XZ-B, 21VZ-B, 25XZ, 30VG T-2090SC Tune Pipe Set: 21XZ-B, 21VZ-B, 25XZ, 30VG
5 out of 5 Customer Rating
T-2090SC Tune Pipe Set: 21XZ-B, 21VZ-B, 25XZ, 30VG
$217.45
#6 A3 Glow Plug Hot Air #6 A3 Glow Plug Hot Air
4 out of 5 Customer Rating
#6 A3 Glow Plug Hot Air
$11.99
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