This is an Os Max 45 FSR with a 743 Muffler and no carburetor. It is a 2-stroke engine designed for use in airplanes and helicopters and is compatible with nitro and glow fuel. The engine is made in Japan and is of high quality. The brand of this engine is O.S.

The engine looks in good  condition but not tested sold as is . It comes with its original box and muffler, making it a great addition to any collection. PLEASE LOOK AT PICTURES FOR MORE DETAILS YOU'LL GET EXACTLY WHAT YOU SEE IF YOU HAVE ANY QUESTIONS PLEASE FEEL FREE TO ASK BEFORE PURCHASE ITEM.  UNTESTED SOLD AS IS.. THANKS