Gearcase Drain Plug – Fits Mercury/MerCruiser Marine Engines (Replaces 10-79953Q04, 10-79953A2) 450HP apply a small amount of

apply a small amount of marine-safe lubricant or soapy water to the insert

Carefully unplug all connectors from the old power pack

serial number ranges are the most accurate way to confirm fitment

What is the difference between this aftermarket kit and an OEM one

Gearcase Drain Plug – Fits Mercury/MerCruiser Marine Engines (Replaces 10-79953Q04, 10-79953A2) 450HP apply a small amount ofProduct Details This Gearcase Drain Plug Fits Mercury MerCruiser Marine Engines is a crucial component for draining and refilling gearcase lubricant in the lower unit. It is designed for a wide range of Mercury outboard engines, including 30 125 HP EFI models, and various MerCruiser sterndrive units. This part serves as a direct replacement for Mercury part numbers 10 79953Q04, 79953Q04, 10 79953A2, 10 79953Q2, as well as aftermarket equivalents like