OS FS 110-Alpha 4-Stroke Engine w/Pump
Brand: OS Engines
Product Code: 327

O.S. FS110-a 4-Stroke Engine w/Pump

PD-08 pump improves performance of this popular power plant!

Scale modelers have enthusiastically embraced FS-a engines because they virtually eliminate oil mess while delivering excellent power. Now you can enjoy the added benefit of a fuel pump with this new version of the FS110-a.


  • Plenty of torque to swing large props.
  • Fuel is delivered consistently to the engine at all times, regardless of the plane's attitude, for more reliable performance.
  • Ideal for aerobatics and other situations that demand high power
  • Includes an ingenious recirculation system that re-lubricates parts instead of venting the oil out into the cowl.

Package Included:

  • O.S. Engines 110FS-a P 4-Stroke Engine
  • Muffler
  • 61P carb w/pump
  • Header pipe
  • F glow plug
  • Instruction manual and needle valve extension cable


Displacement: 1.10 ci (18.0 cc)
Bore: 1.20 in (30.4 mm)
Stroke: 0.98 in (24.8 mm)
Practical RPM: 2,000-11,000 rpm
Power Output: 1.77 hp @ 10,000 rpm
Engine Weight: 21.5 oz (610 g)
Muffler Weight: 2.5 oz (72 g)
Includes: 61P carburetor, F-5040 muffler, PD-08 pump

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