OS Engines FSA155P Alpha Series Pumped Four Stroke Aircraft Engine, 1.55 Size with F6020 Silencer
SKU: OSM35430

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How do you get 200-size power from a 120-size engine? O.S. calls it the FS155-a. Since the FS155-a is a pumped 4-stroke, you’ll enjoy 2.6 hp at all times, regardless of tank position, attitude or fuel level. Its novel recirculation system bathes working parts in constant lubrication, for less friction and wear!
- The same 2.6 horsepower as many 200-size power plants — with the dimensions and weight of a 120-size engine
- Because it’s a pumped 4-stroke, you’ll enjoy plentiful power regardless of tank position, attitude or fuel level
- Instead of oil venting through the crankcase, it’s re-circulated to lubricate working parts — reducing friction and wear as well as cowl cleanup
- Includes the 70R regulating carb for superior throttle response and precise fuel metering
- Also included: F-6020 muffler, Type F glow plug & PD-08 pump









