Water Pump Repair Kit Johnson Evinrude | Sierra 18-3399 Johnson Evinrude Water Pump Repair Kit | Sierra 18-3399 Sierra 18-3399 Johnson Evinrude Water Pump Repair Kit With Housing Water pump kit with housing Contains Sierra 18-7134 o-ring, 18-3337 grommet, 18-3368 impeller, 18-2709 wear plate gasket, 18-3369 screw (short), 18-2705 seal, 18-3336 housing, 18-3365 screw (long), 18-3343 wear plate Replaces Johnson/Evinrude 439077 Replaces Mallory 9-48207