IMPELLER HOUSING PLATE

0305434 OEM impeller housing plate (water pump wear plate) manufactured by Outboard Marine Corporation (OMC) for Johnson and Evinrude outboard engines. It serves as a sealing and wear surface directly underneath the water pump impeller inside the lower unit gearcase assembly. Compatibility & Fitment This part is a vintage component primarily used on 1960s-era 65 HP and 85 HP outboard models, as well as select 50 to 85 HP applications spanning from the 1950s up to 1968. Specific confirmed model groups include: • 65 HP Models (1968): Standard and Heavy Duty gearcase groups (e.g., 65852B, 65833B, 65853B, 65832B). • 85 HP Models (1968): Gearcase groups (e.g., 85853A, 85852A). Associated Replacement Parts When replacing the impeller housing plate during regular water pump maintenance, it is typically serviced alongside the following components: • Water Pump Impeller: Part 0326716 • Impeller Housing / Cover: Part 0377992 • Oil Retainer Seal: Part 0307103 • Gearcase O-Ring / Seal: Part 0308073