Hi I am selling this 2006 3 cylinder mercury 25 4 stroke powerhead this was removed from a motor that had electrical issues so we weren’t able to test run but compression was 155-180 on all cylinders cold oil looked good and showed no signs of water intrusion and motor sounds good cranking over this motor did sit for quite some time I think compression will even out once motor is running please feel free to ask any and all questions and I will be do my best to answer them for you thanks.