Sierra 18-2679 Lower Unit Seal Kit for Johnson/Evinrude Outboards

The Sierra 18-2679 is a comprehensive gear housing seal kit designed for Johnson and Evinrude outboard motors. This complete seal kit provides essential protection for your lower unit by preventing water intrusion while keeping gear oil contained within the gearcase.

Complete Kit Contains:

• (1) 18-2022 Oil Seal (1.0" O.D.) - OEM 303345
• (1) 18-2035 Oil Seal (0.875" O.D.) - OEM 327031
• (1) 18-2891 Bearing Housing Gasket - OEM 303339
• (2) 18-4248 Drain/Fill Plug Washers - OEM 311598
• (1) 18-7100 O-Ring - OEM 301877
• (1) 18-7117 O-Ring - OEM 303360
• (1) 18-7120 O-Ring - OEM 307853
• (1) 18-2534 Spaghetti Seal - OEM 309044

Key Features:

• Manufactured with marine-grade materials that meet or exceed OEM specifications
• High-grade rubber compounds resistant to ozone, UV rays, and petroleum products
• Comprehensive coverage for the complete gear housing assembly
• Designed for gearcases with 1 inch O.D. prop shaft seals
• Interchangeable with GLM 87604

The lower unit gearcase seals face constant exposure to water, salt, and gear oil pressures, and failing seals can lead to contaminated lubricants and accelerated corrosion. Regular seal replacement during routine maintenance helps protect your investment and ensures reliable performance on the water.