2015 Mercury Marine outboard 9.9 horsepower engine with 15" (short) shaft length. Twin cylinder overhead cam carbureted four stroke powerhead. This engine is the largest horsepower in its weight category at 84 pounds. Low oil and over rev warning systems, five position auto ratcheting trim and a 3.2 gallon fuel tank come standard. Give us a call today with any questions and ask about available five year warranty coverage.