Mercury 250 pro xs (250XS L 1B479666) Bought a new to me boat with a mercury 2007 Pro XS 250. The previous owner stated that the engine cut off while running. After looking over the motor, I noticed a hole in the long Block. I started researching part numbers, ( on the block 885-9811-C23- Rev B), (PCM 0308m) now I’m thinking that this is a 2004 200hp 4M9XM02CC (air compressors) , with a 250 lower. With all that being said I am confused and needing help on my next step, With the engine.