This complete power head was off a running 2004 8hp 4 stroke yamaha outboard model F8MSHC. 
The cases are number 

68T-15100-10-1S

 It will defiantly fit 2003 and 2004 6-8hp models and will likely fit many others. The motor was parted due to a bad lower end but upon disassembly was found to have slightly milky oil. These motors were known to create a fair amount of condensation in the crankcase but the presence of water reason can not be verified. The powerhead turns over freely and seems to have good compression.

Didn't find what you were looking for send a message we may have it. 10's of thousand of parts available and will be listing many part or can find and list for you.
We ship Tue.-Fri. Purchases made before 3p.m. Pacific time on those days usually ship same day. Shipping Courier may change without notice to comparable or upgraded service with no change to your shipping fee.  Feel free to ask questions. cel-txt 5zero49o8oo2
We will be listing thousands of parts for your stern drive and outboard motors
Buy here with confidence. We have been doing this for a long time! J2