Mercury Gearbox Drain Screws 12-19183Q02
Genuine Quicksilver Pack of 4 Mercury Mariner Gearbox Oil Drain Washers
Fits Mercury Mariner Gearbox 9.9 HP and above
3/8" (9.7) mm Internal Diameter
Excludes 25/30 HP EFI Models
May fit other types of engines please contact us with engine model and serial number if not Sure