Rotax 377  40 horsepower  duel carb with the best Nippon-Denso  ignition , Its mid-time ,NEVER  taken apart ,  was running great when removed  at  about 160 hours ,above 100 PSI  compression  , clean ,no leaks and will probably  still last longer than when you install the Chinese  pistons that  many are installing in your aircraft engine at overhaul time , , Stick with Genuine Rotax or be sorry . This engine was traded to me for a Rotax 503 and installed on a Quicksilver  so no gearbox and muffler was used on the 503 . this  377 has the brand new  503 Rotax and oil injection and pull starter on it which you can use or  sell , your choice . The buy it now price is $ 1600. with free shipping in the USA only , in other words if you make a lower offer and I accept your offer then you will be responsible for shipping of your choice , NOTE , what you see in the pictures is EXACTLY what you will receive , nothing more  , nothing less ,It does not come with a reduction drive , propeller , ECT , ECT ,, just whats in the pictures , Thanks for looking .