Hi I am selling this 2004 yamaha/mercury F225 4 stroke powerhead this was removed from a running motor compression was 185 on all cylinders and motor sounded great when we started it before tear down comes exactly as shown in pictures and exhaust looked great motor was ran the day we tore it down and it sounded perfect this was a mercury F225 made by Yamaha fits either motor please feel free to ask any and all questions and I will be do my best to answer them for you thanks.