• Planes
  • Cars
  • Gliders
  • Helicopters
  • Boats
  • Radios
  • Batteries & Chargers
  • Equipment
  • SALE
Loading...
Loading...
Loading...
Loading...
Loading...

  • Offers traditional 4-stroke benefits with the ease and economy of a gasoline engine
  • Quick, powerful response makes it an ideal choice for aerobatic as well as scale models
  • Perfect for scale aircraft, with a deeper exhaust note that mimics the sound of full-size aircraft
  • Features the GT33’s mounting bolt pattern and mount-to-drive hub distance
  • Outstanding fuel economy — runs on a mix of engine oil and standard gasoline
  • Rear-mounted carb designed by O.S. & Walbro
  • Lightweight ignition module accepts NiCd, NiMH, LiPo or LiFe battery power
  • Muffler and integral backplate mount included
  • Backplate features an integral choke rod guide
  • PCV (Positive Crankcase Ventilation) system recirculates blow-by gas and oil waste for a cleaner engine and environment

Logo alt

Everything RC since 1975.

Proudly supporting Australia’s RC community for generations with expert advice, exceptional service and quality models from the world’s leading RC brands.

Loading...

© 2025 Modelflight RC. All Rights Reserved

Loading...
Loading...

OS Engines GF40 Gasoline Four Stroke Aircraft Engine, 40cc, with F6040 Silencer, OSM39400

SKU: OSM39400
Loading...
Loading...

A excellent addition to your model, the GF40 from OS Engine combines the economy of a gasoline engine with the power of a 4-stroke.

Categories
  • Shop All
  • Cars
  • Planes
  • Gliders
  • Helicopters
  • Boats
  • Radios
  • Batteries & Chargers
  • Equipment
  • Sale
  • Shop by Brand
About
  • Our Story
  • Retail Store
  • Blog
  • Contact Us
  • Opening Hours
Support
  • Warranty
  • Terms and Conditions
  • Delivery Information
  • Returns & Refunds
  • FAQs
  • Privacy Policy
  • Site Map
$1,599.99
Loading...
Loading...
Loading...
Loading...
Loading...
Loading...

OS Engines GF40 Gasoline Four Stroke Aircraft Engine, 40cc, with F6040 Silencer, OSM39400

SKU: OSM39400
$1,599.99
Loading...
Loading...

A excellent addition to your model, the GF40 from OS Engine combines the economy of a gasoline engine with the power of a 4-stroke.

In stock
Looking for spare parts or upgrades?

View all spare parts

Similar Products

Loading...
OS Engines O.S.Speed Carburettor Repair Parts 21
OS Engines O.S.Speed Carburettor Repair Parts 21$19.99
View product
OS Engines Built Up Parts Set, B21 Drake AD4
OS Engines Built Up Parts Set, B21 Drake AD4$239.99
View product
OS Engines Built Up Parts Set, MAX R21 V2
OS Engines Built Up Parts Set, MAX R21 V2$196.99
View product
OS Engines Needle 3 suit 21M Carbutetor
OS Engines Needle 3 suit 21M Carbutetor$16.99
View product
OS Engines Connecting Rod, R21
OS Engines Connecting Rod, R21$61.99
View product
OS Engines Built Up Parts Set, R2106
OS Engines Built Up Parts Set, R2106$263.99
View product
OS Engines 22E2B Complete Carburetor without Reducer
OS Engines 22E2B Complete Carburetor without Reducer$166.99
View product
OS Engines Built Up Parts Set, B2105
OS Engines Built Up Parts Set, B2105$242.99
View product
OS Engines Cylinder and Piston Assembly, B2105, Clearance
OS Engines Cylinder and Piston Assembly, B2105, Clearance$192.99 $102.00
View product
OS Engines Built Up Parts Set, MAX-B21
OS Engines Built Up Parts Set, MAX-B21$146.99
View product