Genuine OEM Mercury Magnetic Gearcase Drain Screw (Part # 22-8M0058388)

Protect your lower unit's gears and bearings with the Genuine OEM Mercury Magnetic Gearcase Drain Screw (Part # 22-8M0058388). Designed for lower unit gear lube fill and drain ports, this factory updated screw features an integrated high-strength magnet that captures fine metallic debris circulating in the gear oil before it can cause costly wear or gearcase failure.

Upgrading to or replacing your lower unit drain plug with a genuine Mercury magnetic screw is one of the easiest preventive maintenance steps you can take during gear lube service. It provides a reliable seal and gives you an instant visual check of internal gearcase health every time you change your lube.