Lower Unit Drain Plug Seal Gasket – Fits Mercury/MerCruiser Outboard/Sterndrive (Replaces 12-19183-3, 12-19183Q02, 12-19183K02) 160HP It is not compatible with

It is not compatible with 2-stroke engines

Easy to install as an in-line fuel filter element

You will need standard line wrenches (also known as flare nut wrenches) to avoid rounding off the soft metal of the fittings

Drain the old oil from your lower unit by removing both the upper and lower drain plugs

Lower Unit Drain Plug Seal Gasket – Fits Mercury/MerCruiser Outboard/Sterndrive (Replaces 12-19183-3, 12-19183Q02, 12-19183K02) 160HP It is not compatible withProduct Details This Lower Unit Drain Plug Seal Gasket is engineered for a precise fit on Mercury MerCruiser outboard and sterndrive engines that use 3 8 16 drain or fill screws in the gearcase. It covers a wide range of models and years, providing a reliable seal to prevent gear oil leakage. This part is a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 12 19183 3, 12 19183Q02, and 12 19183K02; Sierra 18 2244 and