Sierra 18-3442 G Water Pump Repair KitSierra replacement water pump repair kit for Yamaha Outboards.Kit Contains: (1) 18-3519 Water Pump Housing Insert Cup; (1) 18-3071 Impeller; (1) 18-3521 Water Pump Base Outer Plate; (2) 18-0244 Water Pump Gasket; (4) 18-0256 Bolt; (1) 18-7483 O-Ring; (1) 18-3302 Impeller Key; (1) 18-7485 O-Ring; Interchangeable with: Mallory; 9-48611; Yamaha Outboard; 68V-W0078-00-00;