In Stock

FSa-56II Airplane Engine with F-4040 Silencer
Item No.
OS Engines -
OSMG0957
$527.99
In Stock

FSa-56II Airplane Engine with F-4040 Silencer
Item No.
OS Engines -
OSMG0957
$527.99
FSa-56II Airplane Engine with F-4040 Silencer
Item No.
OS Engines -
OSMG0957
Product
$527.99
Add Ons
Estimated Total:
$527.99
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Product Details
In The Box
- (1) FSA-56II Engine
- (1) F-4040 Silencer
- (1) Type F Glow Plug
- (1) 40NA Carburetor Header Pipe
- (1) Product manual
Needed to Complete
- Fuel: 10%-20% nitromethane with 18% lubricant. Synthetic, castor, or a synthetic/castor lubricant blend may be used.
- NOTE: Certain four-cycle fuels cannot be used due to low oil content
- When choosing fuels for this engine, be sure to select a fuel with at least an 18% lubricant content.
- Propeller: Sport & Aerobatic, 13x6, 12x6, 12x7, 12x8 Scale, 13x6, 13x7, 12x6, 12x7, 12x8

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Manuals & SupportGive your 40-size plane the FSa power advantage!
Mount the FSa-56II in your model, and see the difference advanced O.S. 4-stroke technology makes! Those benefits include a higher performance ceiling for sport flyers and more realistic flight for scale pilots. Plus, you’ll also enjoy rich, deep sound that will enhance your flying experience.
- The popular FS56-a now features upgrades that make it even better than before!
- Blow-by oil exits through the breather nipple on the back plate, for more stable operation.
- Black rocker covers gives this engine a more impressive appearance.
- The F-4040 silencer can be positioned to achieve the ideal fit.
- Mounts with no-mod ease in the same space as the FS-56a.
Product Specifications
Displacement | 0.569 cu in (9.32 cc) |
Product Length | 5.2" (131.3mm) from carb to front of drive hub |
Bore | 0.945" (24mm) |
Crankshaft Type | Threaded |
Power Type | Glow |
Plug Type | F |
Stroke | 0.81" (20.6mm) |
Product Height | 3.3" (84mm) bottom of mounting tab to top of rocker cover |
Prop Range | 12x6-8 - 13x6-7 |
RPM Range | 2,400 - 13,000 |
Cylinders | Single |
Product Width | 1.7" (44mm) between mounting hole centers |
Total Weight | 16.3 oz (461 g) |
Muffler Type | 2-piece aluminum |
Crankshaft Threads | UNF1/4-28 |
Muffler Weight | 1.48 oz (42 g) |