●This set of Lower Unit Gear Housing seal washers is designed to replace worn or damaged washers in Johnson Evinrude and Mercury engines. ●Replaces Johnson Evinrude 307552 300434 Mercury 12-19183Q02 12-19183K02 12-191833 191832 19183 19183B 20260B 20260 F8186 F50556 F8077 Sierra 18-2244 18-2945 18-29451-9 GLM 31170 Mallory 9-601019-601021 and SEI Marine 98-102-09 ●Fits most Mercury MerCruiser and Johnson Evinrude engines and for use on the 3/8-16 drain/fill screw holes in outboard and stern drive gearcases. ●The set includes 20 seal washers that can be used to replace multiple worn-out washers. The oil drain plug gasket located at the bottom of the oil pan helps keep oil from leaking around the oil drain plug. These gaskets are usually a single-use item and should be replaced with each oil change. ●This replacement will help maintain the integrity of the seal, preventing leaks and ensuring that the drain plug remains secure during operation. The convenience of a direct replacement gasket makes it a straightforward task to swap out the old gasket with the new one.