The Sierra 18-3399 Water Pump Kit is interchangeable with the following: Evinrude/Johnson 0396933, 0439077, Mallory 9-48207. Each Sierra product meets or exceeds the original equipment part it replaces. Contains 18-2705 Oil Seal, 18-2709 Wear Plate Gasket, 18-3336 Water Pump Housing, 18-3337 Grommet, 18-3343 Wear Plate, 18-3365 Stainless Steel Bolts, 18-3368 Impeller, 18-3369 Stainless Steel Bolts, 18-7134 O-Ring.