Sierra 18-2789 Lower Unit Seal KitSierra replacement lower unit seal kit for Yamaha Outboards.Kit Includes: (1) 18-0292 Wear Plate to Pump Housing Gasket; (1) 18-0294 Wear Plate to Pump Base Gasket; (2) 18-0297 Oil Seal; (1) 18-0298 O-Ring; (2) 18-0554 Oil Seal; (2) 18-4698 Drain Fill Washer; Interchangeable with: Yamaha Outboard; 6J8-W0001-21-00; 6J8-W0001-C2-00; 6J8-W0001-20-00; 6J8-W0001-22-00;