Engineered Marine Products Water Pump Wear Plate

Engineered Marine Products (EMP) water pump wear plates are replacement cooling-system parts for marine engines. They are also called impeller plates, cup plates or water pump plates. The wear plate sits against the impeller inside the raw water pump. It gives the impeller vanes a smooth, flat surface to seal against, which helps the pump keep steady water flow to the engine.

Key Features:

• Replacement wear plate for marine water pump service and rebuilds
• Provides the sealing surface the impeller runs against
• Helps protect the pump housing and base from impeller wear
• Supports consistent cooling-water flow for outboard and sterndrive engines
• Made by Engineered Marine Products, a brand known for aftermarket marine cooling and water pump components

A worn, scored or corroded wear plate can let water bypass the impeller, which reduces pump output and can lead to overheating. Many boat owners replace the wear plate whenever they replace the impeller. This restores pump efficiency and helps the new impeller last longer. Choose the correct part number from the options on this page to match your pump.