It has been inspected internally and externally, and is in good condition. It has also passed a pressure test, indicating that the seals are in good condition. Gear ratio is 1.75:1 and the bullet diameter is 4.75 inches. Fits Mercury 3.0 liter 2 stroke EFI, DFI (Optimax), and carbureted V6 outboards. However, it does fit some Mercury 200+hp 2.5 liter Optimax outboards as well. Consult your serial number to assure a proper fit.