Magnetic Drain Plug Screw & Gasket for Johnson Evinrude OMC - 318544, 18-2378

Magnetic Drain Plug Screw & Gasket for Johnson Evinrude OMC

This magnetic drain plug screw with integrated gasket is designed for Johnson, Evinrude, and OMC outboard engines, replacing OEM part numbers 318544 and 18-2378.

Overview

This drain plug screw features a built-in magnet to capture metal debris in the lower unit oil, protecting the gearcase from wear. It is a direct replacement for Johnson, Evinrude, and OMC outboard motors. The included gasket ensures a leak-free seal during oil changes.

Built For Performance

• Magnetic tip attracts and holds ferrous particles to prevent gear damage
• Precision-threaded for a secure fit in standard drain holes
• Includes a high-quality sealing gasket for leak prevention
• Made from corrosion-resistant steel for marine conditions
• OEM-spec dimensions ensure compatibility with original equipment

On-The-Job Use

• Used during routine lower unit oil changes on outboard motors
• Helps monitor gearcase health by capturing metal shavings
• Ideal for Johnson, Evinrude, and OMC engines in saltwater and freshwater
• Simple replacement for worn or stripped original drain plugs

Specs At A Glance

Good To Know

Q: Will this drain plug fit a 1989 Evinrude 150? A: This plug is designed for Johnson, Evinrude, and OMC outboards using OEM numbers 318544 and 18-2378; verify thread size and length before purchase.

Q: Is the gasket pre-installed? A: Yes, the gasket is included and pre-attached for easy installation.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.