Warning...
Each lower unit has two pairs of seals (actually 2 of the same seal just facing different directions). The prop shaft seals and the drive shaft seals. They come with 1-Vacuum seal facing out and 1-Pressure seal facing in. If the vacuum seal goes bad it lets the water come into the lower unit, but the pressure seal keeps it from pushing back out. Sometimes the opposite happens. You'll see oil leaking out, but no water in the oil.
We only sell the Best. Ranger, Xpress, Yamaha, Suzuki, Tohatsu.