Drain Screw Gasket - Blue , Mercury - Mercruiser 12-19183-3
Drain Screw Gasket - Blue , Mercury - Mercruiser 12-19183-3, Drain Screw Gasket - Blue , Mercury - Mercruiser 12-19183-3Used with the 3/8 - 16 drain/fill screw found on all Mercruiser and most Mercury/Mariner outboards except those of Japanese origin.