1998 Mercury 25 HP Big Foot 4 Stroke Lower Unit Gearcase
Good mechanical condition but has some damage to the lower skeg and outer flange of the bearing carrier (this damage is cosmetic only and does not affect performance - Please review photos before purchase.
This is a good working lower unit. The oil was clean when drained and passed the pressure test (15 psi for 20 minutes).
The driveshaft has 14 splines and is about 22 7/16" (from the top of the gear housing to the end of the driveshaft).
The prop shaft has 13 splines.
Shifts smoothly and stays in gear as it should.
Water pump was not inspected but we suggest replacing impeller before use.
You will need to re-fill with new gear oil prior to use.