Engineered Marine Products 10-10100-50 Drain Screw Washer 50-Pack

The Engineered Marine Products 10-10100-50 is a professional-grade drain screw washer designed specifically for Mercury and Mariner outboard motor gearcases. This bulk 50-pack is ideal for marine service shops, dealers, and boat owners who perform regular maintenance on multiple engines.

Key Features:

• Stainless steel construction with Nitrile rubber exterior for superior sealing and corrosion resistance
• Compatible with Mercury/Mariner 3-cylinder (30-125 HP), 4-cylinder (40-175 HP), 6-cylinder (200-350 HP), and V6 (135-250 HP) outboard gearcases
• Prevents gear oil leaks at the drain screw location
• OEM replacement quality for reliable performance
• Bulk 50-pack quantity for professional workshops and fleet maintenance

These drain screw washers are essential components for proper gearcase service and should be replaced during every lower unit oil change to ensure a leak-free seal. The bonded construction combines the strength of stainless steel with the sealing properties of Nitrile rubber for long-lasting performance in harsh marine environments.