26-830749 Lower Unit Grease Gaskets,Gearcase Lube Drain Screw Washer,6Pcs,for Mercury 115FS 150 EFI Four Stroke and Mariner Outboards and MerCruiser Stern Drives 290HP Is the included gasket necessary

Is the included gasket necessary

Super 15 25 2-Stroke 1988–1998 99157T2 USA ser# 0B238464 & Up

2L Engine 4-Stroke 35-8M0122423 Serial number 2A456613 and newer

and Marathon models

26-830749 Lower Unit Grease Gaskets,Gearcase Lube Drain Screw Washer,6Pcs,for Mercury 115FS 150 EFI Four Stroke and Mariner Outboards and MerCruiser Stern Drives 290HP Is the included gasket necessaryProduct Details This Gearcase Drain Plug Gasket ensures a tight, reliable seal for the gear lube drain and fill screws. It is designed to fit all MerCruiser stern drives and a range of Mercury Mariner outboards, including 115FS and 150 EFI 4 Stroke models that use a 3 8 16 gearcase drain screw. This part is a direct replacement for Mercury OEM part numbers 26 830749 and the current supersession, 8M0204693. Constructed from durable rubber coated